Mortality in women of reproductive age belonging to the black and indigenous population associated with COVID-19 infection: integrative literature review

Research Article | DOI: https://doi.org/10.31579/2578-8965/250

Mortality in women of reproductive age belonging to the black and indigenous population associated with COVID-19 infection: integrative literature review

  • Gustavo Gonçalves dos Santos 1*
  • Lara Beatriz de Sousa Coelho 2
  • Marcelo Victor Freitas Nascimento 2
  • Edson Silva do Nascimento 3
  • Anderson Lima Cordeiro da Silva 4
  • Leticia de Almeida Dionizio 5
  • Luis Henrique de Andrade 6
  • Beatriz María Bermejo Gil 7
  • Leticia López Pedraza 8
  • Giovana Aparecida Gonçalves Vidotti 9

1Programa de Pós-graduação do Departamento de Ginecologia da Escola Paulista de Medicina da Universidade Federal de São Paulo (EPM/UNIFESP). São Paulo – SP, Brasil. 

2Programa de Pós-graduação em Enfermagem da Universidade Federal do Piauí (PPGENF/UFPI). Grupo de Estudo, Pesquisa e Extensão na Saúde da Mulher da Universidade Federal do Piauí (GEPESM/UFPI). Piauí – PI, Brasil. 

3Prefeitura de Jundiaí, Secretaria Municipal de Saúde de Jundiaí. São Paulo – SP, Brasil. 

4Programa de Pós-Graduação em Saúde Coletiva da Faculdade de Medicina da Universidade de São Paulo (FMUSP). São Paulo – SP, Brasil. Ayfa Faculdade de Ciências Médicas de Itacoatiara. Amazonas - AM, Brasil. 

5Faculdade de Enfermagem. Universidade Santo Amaro (UNISA). São Paulo – SP, Brasil. 

6Faculdade de Enfermagem. Universidade Santo Amaro (UNISA). São Paulo – SP, Brasil. 

7Facultad de Enfermería y Fisioterapia de la Universidad de Salamanca (USAL). Salamanca, Espanha. 

8Escuela Universitaria de Enfermería de la Cruz Roja da Universidad Autónoma de Madrid (EUE/UAM). Madrid, Espanha. 

9Programa de Pós-graduação do Departamento de Ginecologia da Escola Paulista de Medicina da Universidade Federal de São Paulo (EPM/UNIFESP). Faculdade de Medicina de Catanduva (FAMECA/UNIFIPA). São Paulo – SP, Brasil. 

*Corresponding Author: Gustavo Gonçalves dos Santos, Gustavo Gonçalves dos Santos - Departamento de Ginecologia da Escola Paulista de Medicina da Universidade Federal de São Paulo. R. Napoleão de Barros, 608 - Vila Clementino, São Paulo – SP.

Citation: Dos Santos GG, Lara Beatriz de Sousa Coelho, Freitas Nascimento MV, Do Nascimento ES, Anderson Lima Cordeiro Da Silva, et al, (2025), Mortality in women of reproductive age belonging to the black and indigenous population associated with COVID-19 infection: integrative literature review, J. Obstetrics Gynecology and Reproductive Sciences, 9(2) DOI:10.31579/2578-8965/250

Copyright: © 2025, Gustavo Gonçalves dos Santos. This is an open-access article distributed under the terms of The Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Received: 08 November 2024 | Accepted: 18 November 2024 | Published: 05 February 2025

Keywords: literature review; covid-19; health inequalities; ethnic health disparities; maternal mortality

Abstract

Aim: The study addresses racial and ethnic inequalities in maternal mortality during the COVID-19 pandemic. 

Objective: The aim was to review the literature to describe the evolution and outcomes of COVID-19 among black and indigenous women of reproductive age. 

Materials and Methods: An Integrative Literature Review was conducted, following six stages, including the definition of the research question, selection of studies in databases, and qualitative analysis using IRAMUTEQ software. Data sources included EMBASE, LILACS, PubMed and others, covering studies published from 2019 onwards. 

Results: The results revealed that black and indigenous women had higher rates of serious complications and mortality from COVID-19, influenced by comorbidities such as hypertension and diabetes, as well as inequalities in access to healthcare. 

Conclusions: The study addresses racial and ethnic inequalities in maternal mortality during the COVID-19 pandemic. The aim was to review the literature to describe the evolution and outcomes of COVID-19 among black and indigenous women of reproductive age.

Introduction

The COVID-19 pandemic, caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) virus, has brought unprecedented challenges to global health, especially affecting vulnerable groups, including women of reproductive age, pregnant women and postpartum women[1]. Physiological and immunological changes during pregnancy may predispose pregnant women to more serious forms of viral respiratory infections, including COVID-19 [1]. Pregnancy is associated with changes in the immune system that can increase susceptibility to infections, and the presence of comorbidities such as gestational diabetes and hypertension can exacerbate the risks [2].

Maternal mortality associated with COVID-19 has been a growing focus of concern, given the potential adverse effects of the infection on maternal and neonatal health [3]. A study showed that women of reproductive age infected with SARS-CoV-2 have an increased risk of serious complications, including the need for intensive care and ventilatory support, and an increased likelihood of developing serious complications, including acute respiratory failure [4].

In the public health context, maternal mortality related to COVID-19 has highlighted significant disparities, with ethnic minority and socioeconomically disadvantaged women facing greater risks [5,6].

During the pandemic, the need for hospitalization and intensive care among women of reproductive age varied substantially, with peaks associated with outbreaks of more contagious variants, such as Delta and Omicron [7]. Data from a multicenter study indicate that the presence of comorbidities, such as obesity, hypertension and diabetes, significantly increases the risk of severe complications and Mortality [8].

In addition to comorbidities, socioeconomic and healthcare access factors play a crucial role in COVID-19 mortality among women of reproductive age. Inequalities in access to healthcare, including early diagnosis and timely treatment, have exacerbated disparities in health Outcomes [9]. Studies carried out in the United States and the United Kingdom have shown that black women and other ethnic minorities are disproportionately more likely to suffer serious complications from COVID-19 during pregnancy, reflecting systemic inequalities in access to quality healthcare [10].

The COVID-19 pandemic has had a disproportionate impact on several vulnerable populations, including Black and Indigenous women of reproductive age. Studies show that these women have faced higher rates of serious complications and mortality due to SARS-CoV-2 compared to their white counterparts. This disparity is attributed to a combination of pre-existing social, economic and health factors that amplify the risks associated with COVID-19 [10,11]. Black women of reproductive age have been particularly affected by the pandemic, with higher rates of hospitalization and Mortality [10-12]. The research by Lokken et al. (2021) indicated that black pregnant women are more likely to develop severe complications from COVID-19, such as the need for mechanical ventilation and intensive care [12]. This vulnerability is exacerbated by factors such as structural racism and economic inequalities that limit access to healthcare resources and exacerbate underlying conditions, such as hypertension and diabetes, that exacerbate COVID-19 infection [13]

Likewise, indigenous women of reproductive age have faced significant challenges during the pandemic. Studies show that indigenous communities have been disproportionately impacted by SARS-CoV-2, with infection and mortality rates substantially higher than the national Average [14]. The lack of adequate healthcare infrastructure in many indigenous areas, along with cultural and language barriers, contributes to lower quality and accessibility of healthcare [15]. The intersection of skin color, ethnicity, and socioeconomic factors is critical to understanding disparities in COVID-19 mortality among Black and Indigenous women of reproductive age. The literature highlights the urgent need to address these inequalities through public policies that guarantee equitable access to high-quality healthcare [16].

The mortality of women of reproductive age associated with SARS-CoV-2 highlights deep systemic inequalities that require immediate action, representing a public health crisis that demands immediate attention. Understanding the risk factors and consequences of infection during pregnancy is crucial to developing effective interventions, thus justifying this study, with the aim of carrying out an integrative review of the literature to describe the evolution and outcomes of COVID-19 among black and indigenous women of reproductive age.

Materials and Methods

Ethical considerations

As this was a review study that did not involve the collection of primary data, submission to the Research Ethics Committee was not necessary. However, ethical principles were respected when conducting the review. The procedures carried out to approach the object and operationalize the review are registered in Figshare (https://figshare.com/)under the identification of the Digital Object Identifier (DOI) accessible at: https://doi.org/10.6084/m9.figshare.26112769.

Type of study

Integrative Literature Review with a qualitative approach [17]. For its operationalization, six steps were followed, being: 1 - elaboration of the guiding question; 2 - definition of the sample, based on the establishment of criteria for inclusion/exclusion of studies and the search in scientific literature; 3 - data collection, with description of the characteristics of the selected studies; 4 - critical analysis of studies, carried out based on the definition of the level of evidence; 5 - interpretation of results and 6 - presentation of the review.

Research question

The definition of the study's guiding question was formulated, using the PICOT strategy, an acronym for Patient, Intervention, Comparison, Outcomes (outcome) and Type of study, in which: “P” – black and indigenous women of reproductive age with COVID- 19; “I” – hospitalization, hospitalization in ICU and need for ventilatory support; “C” - comparison between women of reproductive age with different skin colors; “O” - outcomes: cure or death associated with COVID-19 in black and indigenous women of reproductive age; and "T" - type of study: epidemiological, observational, cross-sectional studies, prospective and/or retrospective cohort, series and/or case reports. Thus asking: What is the production of scientific knowledge available in the national and international literature of epidemiological studies on the mortality of black and indigenous women of reproductive age with COVID-19 when compared to women of other skin colors?

Inclusion and exclusion criteria

The following inclusion criteria were established: primary studies epidemiological, observational, cross-sectional, prospective and retrospective cohort studies,series and/or case reports published from December 2019 onwards, which addressed articles that answered the study question; available in full electronically; in English or Portuguese. The time frame was established to ensure an adequate number of primary studies, since the inclusion of a high volume of research could make conducting the RIL unfeasible or introduce biases in the following stages of the study, in addition to considering the emergence of the coronavirus in China in December 2019 and to increase the credibility of the results, updated references were used. The exclusion criteria were: letters, editorials, experience reports, reviews, studies that did not fit the theme, study population and objectives that were not relevantto the proposal of this research.

Search strategy

The literature searches took place in May 2024 in the following information sources: Elsevier Scientific Publications (EMBASE), Latin American and Caribbean Literature in Health Sciences (LILACS), on the Medical Literature Analysis and Retrievel System Online (MEDLINE) portal via National Library of Medicine (PUBMED), SciVerse Scopus (SCOPUS), ScienceDirect and Web of Science. The search in the selected databases/portal was carried out with the descriptors selected individually using the Boolean operator AND and OR, using terms indexed in the structured vocabulary of the Health Sciences Descriptors (DeCS) of the Virtual Health Library (VHL) and Medical Subject Headings (MeSH terms).

Study selection

After searching each database, the studies were managed in the Rayyan®[18] web application and studies that met the inclusion criteria were selected. The selection of studies was carried out in three stages: screening of titles and abstracts, by two independent reviewers. Articles that did not meet the inclusion criteria were excluded at this stage; full reading: the articles selected in the previous stage were read in full by two independent reviewers and discrepancies in the inclusion of articles were resolved by a third reviewer.

Data extraction and analysis

The assessment of the methodological quality of the studies was carried out using the level of evidence, taking into account Melnyk & Fineout-Overholt (2005). 1A: Systematic Review (with homogeneity) of Randomized Controlled Clinical Trials (RCT); 1B: RCT with Narrow Confidence Interval; 1C: “all or nothing” Therapeutic Results, 2A: Systematic Review (with homogeneity) of Cohort Studies; 2B: Cohort Study (including lower quality RCT); 2C: Observation of Therapeutic Results (outcomes research) and/or Ecological Study, 3A: Systematic Review (with homogeneity) of Case-Control Studies; 3B: Case-Control Studies, 4: Case Report (including lower quality Cohort or Case-Control) and 5: Expert Opinion without critical evaluation or based on basic materials (physiological study or study with animals)[19].

For data processing and analysis, the software IRAMUTEQ® (Interface de R pour les Analyzes Multidimensionnelles de Textes et de Questionnaires) [20] was used, which is anchored in the R software and allows various statistical analyzes on the textual corpus. The software identifies and formats initial context units that become elementary context units. In the software, vocabulary research is carried out, and words are reduced, based on their roots (lemmatization), with the dictionary created from the reduced forms, and active and supplementary forms identified, enabling different types of analysis, such as Descending Hierarchical Classification, similarity analysis and word cloud [20-22]. The results were presented and discussed with dialogue between the study authors (figure 2-8).

Presentation of the summary of results

The extracted data were presented descriptively and summarized in tables. Data from the studies were collected, containing the following information: study, year of publication, language, country, objectives, methodological characteristics (study design) and main results. Data analysis was carried out qualitatively, seeking to identify recurring patterns and themes in the included studies.

Figure 1- Flowchart for search, selection and inclusion of studies adapted from PRISMA

Results

TitleYear of publication, language and countryType of study and level of evidenceObjectiveResults
Maternal mortality and COVID-19: A nationwide ecological analysis from Ecuador23

2024

English

Ecuador

Cross-sectional studySystematically evaluate the epidemiological characteristics of COVID-19 in pregnant women, evaluate related maternal mortalities, verify the case fatality rate, and outline associated risk factors3,274 cases of COVID-19 have been identified, with 22 deaths. The majority of cases were of mixed ethnicity, however, the highest fatality rate was observed among indigenous people, those aged between 40 and 44 years old and those with a history of comorbidities
Tracking excess of maternal deaths associated with COVID-19 in Brazil: a nationwide analysis24

2023

English

Brazil

Cross-sectional studyEstimate maternal deaths in Brazil caused directly and indirectly by COVID-19 in 2020The chances of being a black woman, living in a rural area and being hospitalized outside the municipality of residence among maternal deaths were higher
Anti-black racism and maternal death from COVID-19: what did we see in the Pandemic?25

2023

Portuguese

Brazil

Cross-sectional studyPresent racism and its manifestations in maternal death from COVID-19The results show how racism affects black and brown pregnant and postpartum women, who have a higher mortality rate due to COVID-19 compared to white women, particularly in the postpartum period. The chance of maternal death in the postpartum period for black women was 62% higher compared to white women
Racial and Ethnic Disparities in Postpartum Care in the Greater Boston Area During the COVID-19 Pandemic26

2022

English

United States of America

Retrospective cohort studyExamine whether the COVID-19 pandemic is associated with an increase in existing racial and ethnic disparities in access to postpartum careParticipants were racially and ethnically diverse, Asian, Black, White Hispanic, and other race or ethnicity women; access to postpartum care recovered more slowly among Black and Hispanic women than among White women
Clinical characteristics and risk factors for maternal deaths due to COVID-19 in Brazil: a nationwide population-based cohort study27

2022

English

United States of America

Cohort studyMonitor the characteristics and factors associated with death among pregnant and postpartum women with coronavirus diseaseBlack people had a higher risk of death than women who self-identified as white. Women in the North, Northeast, Central-West and Southeast regions had a higher risk of death than women in the South region
Progression of COVID-19 Among Black Pregnant Women: Population-Based Study28

2022

English

Brazil

Cross-sectional studyTo evaluate the evolution of COVID-19 related to skin color among Brazilian pregnant women registered in the Influenza Surveillance Information System (SIVEP Gripe)The study identified that there was a drop of approximately two thirds in the proportion of pregnant women who required ICU care or died, when comparing the first and second periods. In the second period, black pregnant women had approximately five times greater risk of death compared to white and mixed-race women.
Effect of the COVID-19 pandemic on Social Determinants of Health in Non-Hispanic Black pregnant women29

2022

English

United States of America

Retrospective cohort studyExamining the difference in social determinants of health for non-Hispanic Black pregnant women during the COVID-19 pandemic compared to pre-pandemicNon-Hispanic Black women during the pandemic had more job opportunities and more prenatal care than before the pandemic, but they experienced more racial discrimination and felt less safe in their neighborhoods
Higher severe acute respiratory syndrome coronavirus 2 infection rate in pregnant patients30

2021

English

United States of America

Cross-sectional studyEstimate the rate of coronavirus infection in pregnancy and examine disparities by race, ethnicity, and English language proficiency in Washington StateThe proportion of pregnant patients in nonwhite racial and ethnic groups with severe acute respiratory syndrome coronavirus disease 2 infection was 2 to 4 times greater than the racial and ethnic distribution of women in Washington state who gave birth live in 2019
Structural racism and risk of SARS-CoV-2 in pregnancy31

2021

English

United States of America

Retrospective cohort studyCompare Black and Non-Black Pregnant Women Infected with SARS-CoV-2 to Understand How the Distribution of Risk Factors May Differ by RaceBlack women were younger and more likely to identify an occupational contact as exposing them to SARS-CoV-2. Most women were more likely to have a premature birth
Disproportionate Impact of Coronavirus Disease 2019 (COVID-19) Among Pregnant and Postpartum Black Women in Brazil Through Structural Racism Lens32

2020

English

Brazil

Cross-sectional studyMonitor SARS-CoV-2 related maternal deaths in the countryMaternal mortality in black women due to COVID-19 was almost 2 times higher than that observed in white women
Risk factors for adverse outcomes among pregnant and postpartum women with acute respiratory distress syndrome due to COVID-19 in Brazil33

2020

English

Brazil

Cross-sectional studyTo evaluate whether clinical and social risk factors are associated with negative outcomes for COVID-19 disease among Brazilian pregnant and postpartum womenThe analysis showed that the postpartum period, age over 35 years, obesity, diabetes, black ethnicity, living in a peri-urban area, not having access to the Family Health Strategy or living more than 100 km from the reporting hospital were associated with an increased risk of adverse outcomes
The tragedy of COVID-19 in Brazil: 124 maternal deaths and counting34

2020

English

Brazil

Cross-sectional studyTo describe outcomes for pregnant and postpartum women with COVID-19 disease from the first documented case in Brazil on February 26, 2020 until June 18, 2020It was diagnosed in 978 pregnant and postpartum women in Brazil during the study period, the study found 124 deaths of pregnant or postpartum women. Of the 978 positive cases, 207 (21.2%) were admitted to the ICU (134 recovered cases and 73 fatal cases). It is worth mentioning that 22.6% of women who died were not admitted to the ICU, and only 64.0% had invasive ventilation.
Racial and ethnic disparities in severity of COVID-19 disease in pregnancy in the United States35

2020

English

United States of America

Epidemiological studyReview cases of women in an obstetric clinic diagnosed with COVID-19Black women had chronic lung disease, diabetes, hypertension, or obesity, which may have contributed to their increased vulnerability to COVID-19
Coronavirus disease 2019 pregnancy outcomes in a racially and ethnically diverse population36

2020

English

Case series studyDescribe the clinical course of coronavirus disease 2019, the effect of comorbidities on disease severity, laboratory trends, and pregnancy outcomes of symptomatic and asymptomatic pregnant womenHispanic women were overrepresented in the coronavirus-positive group. Additionally, Hispanic ethnicity was associated with a higher rate of moderate and severe illness than non-Hispanic ethnicity.
Characteristics and outcomes of pregnant women admitted to hospital with confirmed SARS-CoV-2 infection in UK: national population based cohort study37

2020

English

United Kingdom

Prospective cohort studyTo describe pregnant women admitted to hospital with coronavirus infection in the United KingdomPregnant women admitted to the hospital were black, overweight, aged 35 or over and had pre-existing comorbidities

Source: Prepared by the authors. 2024

Table 1: Synthesis of knowledge of the studies included in the review

The graph below is a representation of Zipf's Law, used in word frequency analyzes in texts. In the Zipf chart, the frequency of a word (Y-axis) is plotted as a function of its ranking (X-axis) on a logarithmic scale. The most frequent word is in first place, the second most frequent in second place, and so on; the Y axis represents the frequency of occurrence of each word in the analyzed corpus; the logarithmic scale is typical in Zipf graphs, as it makes 

it easier to visualize the distribution of word frequencies; and each red dot on the graph represents a word from the analyzed corpus, with its frequency plotted against its ranking. The graph shows a sharp drop in frequency as the ranking increases, which is expected in a Zipf graph. The linearity of the graph on a logarithmic scale suggests that the distribution of word frequencies follows Zipf's Law (figure 2).

Source: Prepared by the IRAMUTEQ® software (R Interface for Multidimensional Analysis of Texts and Questionnaires. 2024.

Figure 2: Word frequency by representation of Zipf's Law

Using the software, a word cloud was generated where the frequency of words in the text corpus is visualized, where the size of each word is proportional to its frequency in the analyzed text. Highlighted words: "woman" is the most highlighted word and, therefore, the most frequent in the analyzed corpus. Words related to maternal mortality and COVID-19: "covid," "pandemic," "respiratory," "syndrome," "infection," "intensive," 

"ventilation," and "diagnose" indicate the presence of discussions about respiratory complications and the severity of COVID-19 infection. Social and demographic aspects: "black," "Hispanic," "white," "ethnic," "race," "racial," and "minority" suggest that the study addresses racial and ethnic disparities in maternal mortality associated with COVID-19. "Age," "group," and "factor" can indicate analysis of different demographic groups. (figure 3).

Figure 3: Maternal mortality and COVID-19 word cloud

The dendrogram generated by IRAMUTEQ® visualizes the co-occurrence and semantic proximity between different terms in the textual corpus. The words were grouped into clusters, which are highlighted by different colors and shaded areas. Yellow Cluster: includes terms such as "death," "admission," "uti," "therapy," "intensive," and "ventilation," suggesting a focus on severe cases of COVID-19 that require intensive care and are associated with mortality. Orange Cluster: Contains terms such as "pregnant," "period," "symptom," and "postpartum," which appear to be related to conditions and symptoms during and after pregnancy. Green 

Cluster: Includes terms such as "coronavirus," "respiratory," "syndrome," and "acute," indicating a focus on respiratory complications associated with COVID-19. Pink Cluster: includes terms such as "pandemic," "ethnic," "discrimination," and "racial," which point to the discussion of racial and ethnic inequalities in health during the pandemic. Blue Cluster: Includes terms such as "ventilatory," "necessary," "given," and "county," suggesting discussions about the need for mechanical ventilation and regional data. Red Cluster: includes many central terms such as "woman," "serious," "childbirth," "black," "covid," and "hospitalization," which appear to be the core of the discussions and are connected to several other clusters (figure 4).

Source: Prepared by the IRAMUTEQ® software (R Interface for Multidimensional Analysis of Texts and Questionnaires. 2024.

Figure 4: Dendrogram of occurrence and semantic proximity between textual corpus terms

The terms within each cluster are semantically related, indicating that they frequently appear together in the analyzed texts. The proximity between the clusters suggests that there are thematic overlaps and that some themes are interrelated. The central theme appears to be "women" and "maternal mortality" associated with "COVID-19," with terms related to disease severity, hospitalization, and intensive care. Other important topics include respiratory complications, racial and ethnic inequalities, and specific care during pregnancy and postpartum. This dendrogram provides a structured overview of the main themes and subthemes covered in your text corpus on maternal mortality associated with COVID-19.

Regarding the classification of a textual corpus into different classes based on similarity analysis and word frequency, each class is represented by a different color and a percentage that indicates the proportion of the corpus that belongs to that class. In this study, class 1 (18.8%) represents the largest proportion of the corpus. Most frequent words: "admission," "state," "death," "union," "hospitalization," "ventilation." serious complications from 

COVID-19 leading to hospital admission and the need for ventilation, possibly ending in death; class 6 (17.4%) most frequent words: "ethnic," "black," "pandemic," "disparity," "racial," "population." racial and ethnic disparities during the pandemic, especially focusing on the black population; class 4 (17.4%) most frequent words: “pregnant,” “pregnancy,” “postpartum,” “care,” “complication.” aspects related to pregnancy, postpartum care and associated complications; class 5 (15.9%) most frequent words: "respiratory," "syndrome," "acute," "coronavirus," "ventilation." class 2 (14.5%) most frequent words: "system," "social," "measure," "access," "social and systemic aspects, measures of access to health and social conditions; most frequent words: "hospital," "hospitalization," "doctor," "care," "hospitalization," medical care and treatment. The dendrogram below (figure 5) offers a clear view of how the textual corpus was segmented into distinct themes, which can help in structuring your data analysis and identifying specific areas of focus in the study of mortality associated with COVID-19.

Source: Prepared by the IRAMUTEQ® software (R Interface for Multidimensional Analysis of Texts and Questionnaires. 2024.

Figure 5: Dendrogram in classes segmented into distinct themes

Discussion

The analysis of the articles included in this review reveals important information about the mortality of black and indigenous women of reproductive age associated with COVID-19 infection. The RIL on maternal mortality due to COVID-19 in black and indigenous women also signals a worrying panorama of inequality and exacerbated vulnerability driven by the pandemic.

Maternal mortality among black and indigenous women when associated with the COVID-19 pandemic demonstrates a consistent pattern of vulnerability. Thus, in Ecuador, it was identified that indigenous women had the highest mortality rate among pregnant women infected with COVID-19, highlighting the intersection between ethnicity and risk of maternal death in this vulnerable population [23].

A study shows that black pregnant women were more likely to develop serious complications, such as the need for mechanical ventilation and intensive care, due to vulnerabilities intensified by factors such as structural racism and economic inequalities [12,30]. The lack of adequate healthcare infrastructure in indigenous areas, along with cultural and language barriers, has contributed to lower quality and accessibility of healthcare, worsening negative outcomes in these populations.

The intersection between skin color, ethnicity and socioeconomic factors is crucial to understanding the disparities in COVID-19 lethality among black and indigenous women [25,26,28,31,32,38]. The disproportionate impact on these populations is the result of a series of social, economic and structural factors that place these women in a position of high risk in relation to maternal mortality. Study reports that black women face a greater likelihood of severe complications, such as respiratory failure, compared to women of other races, which has been attributed to disparities in access to healthcare and pre-existing health conditions, often worsened by factors adverse socioeconomic conditions [12,28,30,32,33].

Indigenous women have also experienced elevated rates of maternal mortality during the COVID-19 pandemic, with factors such as geographic location, which limits access to quality health services, and the historical marginalization of these populations, contributing to increased risk [38].

The presence of comorbidities, such as hypertension and diabetes, were also relevant factors found in this review, given their prevalence, they were concentrated among black and indigenous women due to social determinants of health, such as chronic stress associated with racism and poverty [24,27,28,29,31,32]. These conditions increase the vulnerability of these women to COVID-19, exacerbating the risk of maternal Mortality [39,40]

Furthermore, lack of access to quality prenatal and obstetric care is a critical factor contributing to high maternal mortality from COVID-19 [24,32,33,34]. The disruption of healthcare services during the pandemic, combined with a reluctance to seek care for fear of infection, has further aggravated the situation. The literature indicates that women from these populations had less access to adequate prenatal care and often received less guidance about the risks and preventive measures necessary during pregnancy in times of pandemic [24,27,28,29,31,32].

Inequality in the distribution of health resources, such as ventilators and ICU beds, was also highlighted as a reason that contributed to the higher mortality among black and indigenous women. In many regions, these populations live in areas with less hospital infrastructure, which limits access to critical care needed to treat serious complications from COVID-19 [28,32,33].

In Brazil, the situation is similar, where black women face a significantly higher risk of death from COVID-19 compared to white women. Studies highlight that factors such o living in rural areas and being hospitalized outside the municipality of residence increase the chances of maternal Death [24]. In the United States, the racial disparity in maternal mortality from COVID-19 is also evident, with black women presenting a higher risk of serious complications and death during pregnancy and the postpartum period. The pandemic has further accentuated pre-existing inequalities in access to healthcare, with black and Hispanic women facing greater difficulty in receiving adequate postpartum care [29,37].

Furthermore, analysis of maternal mortality in Brazil and the United States indicates that pre-existing comorbidities, such as obesity, diabetes and hypertension, are more prevalent among black women, contributing to the greater severity of COVID-19 and increasing the risk of Death [27]. Studies also indicate that the inadequate response of the health system, combined with racial discrimination, results in higher maternal mortality from COVID-19 among black women. In Brazil, mortality among black women was almost twice as high as that observed among white women, highlighting the urgent need for public policies that address these disparities [25,32].

Black and indigenous women of reproductive age had significantly higher rates of serious complications and mortality associated with COVID-19. These inequalities reflect structural disparities in health, rooted in racism and barriers to access to care. Black and indigenous women have had less access to quality prenatal and obstetric care during the pandemic. This has resulted in less guidance and adequate preventive interventions to deal with infection during pregnancy [25,26,28,31,32,35]. 

The review suggests equitable allocation of health resources as a key way to ensure that all women, regardless of their race or ethnicity, have access to the care they need during public health emergencies. Finally, it highlights the urgent need for specific interventions and public policies that address structural inequalities that affect black and indigenous women. The COVID-19 pandemic has exposed and exacerbated existing disparities, and the review concludes that it is imperative to develop public health strategies that are culturally sensitive and that address the specific needs of these populations. Only through an equitable and inclusive approach will it be possible to reduce maternal mortality and ensure that all women have the opportunity to have a safe pregnancy and birth, even in times of global crisis.

Conclusion

This study highlights the severity of racial disparities in maternal mortality associated with COVID-19, particularly among Black and Indigenous women. The findings suggest that these inequalities are not merely a consequence of the pandemic, but reflect structural and historical issues of racism and discrimination that permeate access and quality of healthcare. The disproportionate impact of COVID-19 on these populations emphasizes the need for public policies aimed at racial equity in health, including improving access to quality health services, implementing strategies to mitigate structural racism, and promoting interventions focused on the specific needs of black and indigenous women. This study reinforces the urgency of integrated actions that address the roots of social and health inequalities, with the aim of reducing maternal mortality and ensuring safe and equitable care for all women, regardless of their skin color. 

Acknowledgements

Postgraduate Program of the Department of Gynecology of the Escola Paulista de Medicina of the Universidade Federal de São Paulo, Facultad de Enfermería y Fisioterapia of the Universidad de Salamanca and Escuela Universitaria of the Enfermería Cruz Roja of the Universidad Autónoma de Madrid.

Declaration of conflicting interests:

The authors have no conflicts of interest to declare

Funding statement:

The authorsdeclare that therewas no funding for the study

References

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Sing-yung Wu

Journal of Neuroscience and Neurological Surgery. I had the experience of publishing a research article recently. The whole process was simple from submission to publication. The reviewers made specific and valuable recommendations and corrections that improved the quality of my publication. I strongly recommend this Journal.

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Orlando Villarreal

Dr. Katarzyna Byczkowska My testimonial covering: "The peer review process is quick and effective. The support from the editorial office is very professional and friendly. Quality of the Clinical Cardiology and Cardiovascular Interventions is scientific and publishes ground-breaking research on cardiology that is useful for other professionals in the field.

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Katarzyna Byczkowska

Thank you most sincerely, with regard to the support you have given in relation to the reviewing process and the processing of my article entitled "Large Cell Neuroendocrine Carcinoma of The Prostate Gland: A Review and Update" for publication in your esteemed Journal, Journal of Cancer Research and Cellular Therapeutics". The editorial team has been very supportive.

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Anthony Kodzo-Grey Venyo

Testimony of Journal of Clinical Otorhinolaryngology: work with your Reviews has been a educational and constructive experience. The editorial office were very helpful and supportive. It was a pleasure to contribute to your Journal.

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Pedro Marques Gomes

Dr. Bernard Terkimbi Utoo, I am happy to publish my scientific work in Journal of Women Health Care and Issues (JWHCI). The manuscript submission was seamless and peer review process was top notch. I was amazed that 4 reviewers worked on the manuscript which made it a highly technical, standard and excellent quality paper. I appreciate the format and consideration for the APC as well as the speed of publication. It is my pleasure to continue with this scientific relationship with the esteem JWHCI.

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Bernard Terkimbi Utoo

This is an acknowledgment for peer reviewers, editorial board of Journal of Clinical Research and Reports. They show a lot of consideration for us as publishers for our research article “Evaluation of the different factors associated with side effects of COVID-19 vaccination on medical students, Mutah university, Al-Karak, Jordan”, in a very professional and easy way. This journal is one of outstanding medical journal.

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Prof Sherif W Mansour

Dear Hao Jiang, to Journal of Nutrition and Food Processing We greatly appreciate the efficient, professional and rapid processing of our paper by your team. If there is anything else we should do, please do not hesitate to let us know. On behalf of my co-authors, we would like to express our great appreciation to editor and reviewers.

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Hao Jiang

As an author who has recently published in the journal "Brain and Neurological Disorders". I am delighted to provide a testimonial on the peer review process, editorial office support, and the overall quality of the journal. The peer review process at Brain and Neurological Disorders is rigorous and meticulous, ensuring that only high-quality, evidence-based research is published. The reviewers are experts in their fields, and their comments and suggestions were constructive and helped improve the quality of my manuscript. The review process was timely and efficient, with clear communication from the editorial office at each stage. The support from the editorial office was exceptional throughout the entire process. The editorial staff was responsive, professional, and always willing to help. They provided valuable guidance on formatting, structure, and ethical considerations, making the submission process seamless. Moreover, they kept me informed about the status of my manuscript and provided timely updates, which made the process less stressful. The journal Brain and Neurological Disorders is of the highest quality, with a strong focus on publishing cutting-edge research in the field of neurology. The articles published in this journal are well-researched, rigorously peer-reviewed, and written by experts in the field. The journal maintains high standards, ensuring that readers are provided with the most up-to-date and reliable information on brain and neurological disorders. In conclusion, I had a wonderful experience publishing in Brain and Neurological Disorders. The peer review process was thorough, the editorial office provided exceptional support, and the journal's quality is second to none. I would highly recommend this journal to any researcher working in the field of neurology and brain disorders.

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Dr Shiming Tang

Dear Agrippa Hilda, Journal of Neuroscience and Neurological Surgery, Editorial Coordinator, I trust this message finds you well. I want to extend my appreciation for considering my article for publication in your esteemed journal. I am pleased to provide a testimonial regarding the peer review process and the support received from your editorial office. The peer review process for my paper was carried out in a highly professional and thorough manner. The feedback and comments provided by the authors were constructive and very useful in improving the quality of the manuscript. This rigorous assessment process undoubtedly contributes to the high standards maintained by your journal.

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Raed Mualem

International Journal of Clinical Case Reports and Reviews. I strongly recommend to consider submitting your work to this high-quality journal. The support and availability of the Editorial staff is outstanding and the review process was both efficient and rigorous.

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Andreas Filippaios

Thank you very much for publishing my Research Article titled “Comparing Treatment Outcome Of Allergic Rhinitis Patients After Using Fluticasone Nasal Spray And Nasal Douching" in the Journal of Clinical Otorhinolaryngology. As Medical Professionals we are immensely benefited from study of various informative Articles and Papers published in this high quality Journal. I look forward to enriching my knowledge by regular study of the Journal and contribute my future work in the field of ENT through the Journal for use by the medical fraternity. The support from the Editorial office was excellent and very prompt. I also welcome the comments received from the readers of my Research Article.

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Dr Suramya Dhamija

Dear Erica Kelsey, Editorial Coordinator of Cancer Research and Cellular Therapeutics Our team is very satisfied with the processing of our paper by your journal. That was fast, efficient, rigorous, but without unnecessary complications. We appreciated the very short time between the submission of the paper and its publication on line on your site.

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Bruno Chauffert

I am very glad to say that the peer review process is very successful and fast and support from the Editorial Office. Therefore, I would like to continue our scientific relationship for a long time. And I especially thank you for your kindly attention towards my article. Have a good day!

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Baheci Selen

"We recently published an article entitled “Influence of beta-Cyclodextrins upon the Degradation of Carbofuran Derivatives under Alkaline Conditions" in the Journal of “Pesticides and Biofertilizers” to show that the cyclodextrins protect the carbamates increasing their half-life time in the presence of basic conditions This will be very helpful to understand carbofuran behaviour in the analytical, agro-environmental and food areas. We greatly appreciated the interaction with the editor and the editorial team; we were particularly well accompanied during the course of the revision process, since all various steps towards publication were short and without delay".

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Jesus Simal-Gandara

I would like to express my gratitude towards you process of article review and submission. I found this to be very fair and expedient. Your follow up has been excellent. I have many publications in national and international journal and your process has been one of the best so far. Keep up the great work.

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Douglas Miyazaki

We are grateful for this opportunity to provide a glowing recommendation to the Journal of Psychiatry and Psychotherapy. We found that the editorial team were very supportive, helpful, kept us abreast of timelines and over all very professional in nature. The peer review process was rigorous, efficient and constructive that really enhanced our article submission. The experience with this journal remains one of our best ever and we look forward to providing future submissions in the near future.

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Dr Griffith

I am very pleased to serve as EBM of the journal, I hope many years of my experience in stem cells can help the journal from one way or another. As we know, stem cells hold great potential for regenerative medicine, which are mostly used to promote the repair response of diseased, dysfunctional or injured tissue using stem cells or their derivatives. I think Stem Cell Research and Therapeutics International is a great platform to publish and share the understanding towards the biology and translational or clinical application of stem cells.

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Dr Tong Ming Liu

I would like to give my testimony in the support I have got by the peer review process and to support the editorial office where they were of asset to support young author like me to be encouraged to publish their work in your respected journal and globalize and share knowledge across the globe. I really give my great gratitude to your journal and the peer review including the editorial office.

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Husain Taha Radhi

I am delighted to publish our manuscript entitled "A Perspective on Cocaine Induced Stroke - Its Mechanisms and Management" in the Journal of Neuroscience and Neurological Surgery. The peer review process, support from the editorial office, and quality of the journal are excellent. The manuscripts published are of high quality and of excellent scientific value. I recommend this journal very much to colleagues.

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S Munshi

Dr.Tania Muñoz, My experience as researcher and author of a review article in The Journal Clinical Cardiology and Interventions has been very enriching and stimulating. The editorial team is excellent, performs its work with absolute responsibility and delivery. They are proactive, dynamic and receptive to all proposals. Supporting at all times the vast universe of authors who choose them as an option for publication. The team of review specialists, members of the editorial board, are brilliant professionals, with remarkable performance in medical research and scientific methodology. Together they form a frontline team that consolidates the JCCI as a magnificent option for the publication and review of high-level medical articles and broad collective interest. I am honored to be able to share my review article and open to receive all your comments.

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Tania Munoz

“The peer review process of JPMHC is quick and effective. Authors are benefited by good and professional reviewers with huge experience in the field of psychology and mental health. The support from the editorial office is very professional. People to contact to are friendly and happy to help and assist any query authors might have. Quality of the Journal is scientific and publishes ground-breaking research on mental health that is useful for other professionals in the field”.

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George Varvatsoulias

Dear editorial department: On behalf of our team, I hereby certify the reliability and superiority of the International Journal of Clinical Case Reports and Reviews in the peer review process, editorial support, and journal quality. Firstly, the peer review process of the International Journal of Clinical Case Reports and Reviews is rigorous, fair, transparent, fast, and of high quality. The editorial department invites experts from relevant fields as anonymous reviewers to review all submitted manuscripts. These experts have rich academic backgrounds and experience, and can accurately evaluate the academic quality, originality, and suitability of manuscripts. The editorial department is committed to ensuring the rigor of the peer review process, while also making every effort to ensure a fast review cycle to meet the needs of authors and the academic community. Secondly, the editorial team of the International Journal of Clinical Case Reports and Reviews is composed of a group of senior scholars and professionals with rich experience and professional knowledge in related fields. The editorial department is committed to assisting authors in improving their manuscripts, ensuring their academic accuracy, clarity, and completeness. Editors actively collaborate with authors, providing useful suggestions and feedback to promote the improvement and development of the manuscript. We believe that the support of the editorial department is one of the key factors in ensuring the quality of the journal. Finally, the International Journal of Clinical Case Reports and Reviews is renowned for its high- quality articles and strict academic standards. The editorial department is committed to publishing innovative and academically valuable research results to promote the development and progress of related fields. The International Journal of Clinical Case Reports and Reviews is reasonably priced and ensures excellent service and quality ratio, allowing authors to obtain high-level academic publishing opportunities in an affordable manner. I hereby solemnly declare that the International Journal of Clinical Case Reports and Reviews has a high level of credibility and superiority in terms of peer review process, editorial support, reasonable fees, and journal quality. Sincerely, Rui Tao.

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Rui Tao

Clinical Cardiology and Cardiovascular Interventions I testity the covering of the peer review process, support from the editorial office, and quality of the journal.

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Khurram Arshad

Clinical Cardiology and Cardiovascular Interventions, we deeply appreciate the interest shown in our work and its publication. It has been a true pleasure to collaborate with you. The peer review process, as well as the support provided by the editorial office, have been exceptional, and the quality of the journal is very high, which was a determining factor in our decision to publish with you.

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Gomez Barriga Maria Dolores

The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews journal clinically in the future time.

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Lin Shaw Chin

Clinical Cardiology and Cardiovascular Interventions, I would like to express my sincerest gratitude for the trust placed in our team for the publication in your journal. It has been a true pleasure to collaborate with you on this project. I am pleased to inform you that both the peer review process and the attention from the editorial coordination have been excellent. Your team has worked with dedication and professionalism to ensure that your publication meets the highest standards of quality. We are confident that this collaboration will result in mutual success, and we are eager to see the fruits of this shared effort.

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Maria Dolores Gomez Barriga

Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, I hope this message finds you well. I want to express my utmost gratitude for your excellent work and for the dedication and speed in the publication process of my article titled "Navigating Innovation: Qualitative Insights on Using Technology for Health Education in Acute Coronary Syndrome Patients." I am very satisfied with the peer review process, the support from the editorial office, and the quality of the journal. I hope we can maintain our scientific relationship in the long term.

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Dr Maria Dolores Gomez Barriga

Dear Monica Gissare, - Editorial Coordinator of Nutrition and Food Processing. ¨My testimony with you is truly professional, with a positive response regarding the follow-up of the article and its review, you took into account my qualities and the importance of the topic¨.

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Dr Maria Regina Penchyna Nieto

Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, The review process for the article “The Handling of Anti-aggregants and Anticoagulants in the Oncologic Heart Patient Submitted to Surgery” was extremely rigorous and detailed. From the initial submission to the final acceptance, the editorial team at the “Journal of Clinical Cardiology and Cardiovascular Interventions” demonstrated a high level of professionalism and dedication. The reviewers provided constructive and detailed feedback, which was essential for improving the quality of our work. Communication was always clear and efficient, ensuring that all our questions were promptly addressed. The quality of the “Journal of Clinical Cardiology and Cardiovascular Interventions” is undeniable. It is a peer-reviewed, open-access publication dedicated exclusively to disseminating high-quality research in the field of clinical cardiology and cardiovascular interventions. The journal's impact factor is currently under evaluation, and it is indexed in reputable databases, which further reinforces its credibility and relevance in the scientific field. I highly recommend this journal to researchers looking for a reputable platform to publish their studies.

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Dr Marcelo Flavio Gomes Jardim Filho

Dear Editorial Coordinator of the Journal of Nutrition and Food Processing! "I would like to thank the Journal of Nutrition and Food Processing for including and publishing my article. The peer review process was very quick, movement and precise. The Editorial Board has done an extremely conscientious job with much help, valuable comments and advices. I find the journal very valuable from a professional point of view, thank you very much for allowing me to be part of it and I would like to participate in the future!”

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Zsuzsanna Bene

Dealing with The Journal of Neurology and Neurological Surgery was very smooth and comprehensive. The office staff took time to address my needs and the response from editors and the office was prompt and fair. I certainly hope to publish with this journal again.Their professionalism is apparent and more than satisfactory. Susan Weiner

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Dr Susan Weiner

My Testimonial Covering as fellowing: Lin-Show Chin. The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews.

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Lin-Show Chin

My experience publishing in Psychology and Mental Health Care was exceptional. The peer review process was rigorous and constructive, with reviewers providing valuable insights that helped enhance the quality of our work. The editorial team was highly supportive and responsive, making the submission process smooth and efficient. The journal's commitment to high standards and academic rigor makes it a respected platform for quality research. I am grateful for the opportunity to publish in such a reputable journal.

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Sonila Qirko

My experience publishing in International Journal of Clinical Case Reports and Reviews was exceptional. I Come forth to Provide a Testimonial Covering the Peer Review Process and the editorial office for the Professional and Impartial Evaluation of the Manuscript.

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Luiz Sellmann

I would like to offer my testimony in the support. I have received through the peer review process and support the editorial office where they are to support young authors like me, encourage them to publish their work in your esteemed journals, and globalize and share knowledge globally. I really appreciate your journal, peer review, and editorial office.

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Zhao Jia

Dear Agrippa Hilda- Editorial Coordinator of Journal of Neuroscience and Neurological Surgery, "The peer review process was very quick and of high quality, which can also be seen in the articles in the journal. The collaboration with the editorial office was very good."

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Thomas Urban

I would like to express my sincere gratitude for the support and efficiency provided by the editorial office throughout the publication process of my article, “Delayed Vulvar Metastases from Rectal Carcinoma: A Case Report.” I greatly appreciate the assistance and guidance I received from your team, which made the entire process smooth and efficient. The peer review process was thorough and constructive, contributing to the overall quality of the final article. I am very grateful for the high level of professionalism and commitment shown by the editorial staff, and I look forward to maintaining a long-term collaboration with the International Journal of Clinical Case Reports and Reviews.

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Cristina Berriozabal

To Dear Erin Aust, I would like to express my heartfelt appreciation for the opportunity to have my work published in this esteemed journal. The entire publication process was smooth and well-organized, and I am extremely satisfied with the final result. The Editorial Team demonstrated the utmost professionalism, providing prompt and insightful feedback throughout the review process. Their clear communication and constructive suggestions were invaluable in enhancing my manuscript, and their meticulous attention to detail and dedication to quality are truly commendable. Additionally, the support from the Editorial Office was exceptional. From the initial submission to the final publication, I was guided through every step of the process with great care and professionalism. The team's responsiveness and assistance made the entire experience both easy and stress-free. I am also deeply impressed by the quality and reputation of the journal. It is an honor to have my research featured in such a respected publication, and I am confident that it will make a meaningful contribution to the field.

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Dr Tewodros Kassahun Tarekegn

"I am grateful for the opportunity of contributing to [International Journal of Clinical Case Reports and Reviews] and for the rigorous review process that enhances the quality of research published in your esteemed journal. I sincerely appreciate the time and effort of your team who have dedicatedly helped me in improvising changes and modifying my manuscript. The insightful comments and constructive feedback provided have been invaluable in refining and strengthening my work".

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Dr Shweta Tiwari

I thank the ‘Journal of Clinical Research and Reports’ for accepting this article for publication. This is a rigorously peer reviewed journal which is on all major global scientific data bases. I note the review process was prompt, thorough and professionally critical. It gave us an insight into a number of important scientific/statistical issues. The review prompted us to review the relevant literature again and look at the limitations of the study. The peer reviewers were open, clear in the instructions and the editorial team was very prompt in their communication. This journal certainly publishes quality research articles. I would recommend the journal for any future publications.

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Dr Farooq Wandroo

Dear Jessica Magne, with gratitude for the joint work. Fast process of receiving and processing the submitted scientific materials in “Clinical Cardiology and Cardiovascular Interventions”. High level of competence of the editors with clear and correct recommendations and ideas for enriching the article.

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Dr Anyuta Ivanova

We found the peer review process quick and positive in its input. The support from the editorial officer has been very agile, always with the intention of improving the article and taking into account our subsequent corrections.

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Dr David Vinyes