Zika virus public health crisis and the perpetuation of gender inequality in Brazil

Disruption of myelin structure and oligodendrocyte maturation in a macaque model of congenital Zika infection

Zika virus (ZikV) infection during pregnancy can cause congenital Zika syndrome (CZS) and neurodevelopmental delay in infants, of which the pathogenesis remains poorly understood. We utilize an established female pigtail macaque maternal-to-fetal ZikV infection/exposure model to study fetal brain pathophysiology of CZS manifesting from ZikV exposure in utero. We find prenatal ZikV exposure leads to profound disruption of fetal myelin, with extensive downregulation in gene expression for key components of oligodendrocyte maturation and myelin production. Immunohistochemical analyses reveal marked decreases in myelin basic protein intensity and myelinated fiber density in ZikV-exposed animals. At the ultrastructural level, the myelin sheath in ZikV-exposed animals shows multi-focal decompaction, occurring concomitant with dysregulation of oligodendrocyte gene expression and maturation. These findings define fetal neuropathological profiles of ZikV-linked brain injury underlying CZS resulting from ZikV exposure in utero. Because myelin is critical for cortical development, ZikV-related perturbations in oligodendrocyte function may have long-term consequences on childhood neurodevelopment, even in the absence of overt microcephaly.

"I found out about Zika virus after she was born." Women's experiences of risk communication during the Zika virus epidemic in Brazil, Colombia, and Puerto Rico

Providing accurate, evidence-based information to women with Zika infection during pregnancy was problematic because of the high degree of uncertainty in the diagnosis of the infection and the associated risk. The 2015-17 Zika virus epidemic overwhelmingly affected women in countries with limited access to safe abortion. Understanding women's perspectives on risk communication during pregnancy in the context of an emerging pathogen can help inform risk communication in response to future outbreaks that affect fetal or child development. We conducted a cross-sectional qualitative interview study with 73 women from 7 locations in Brazil, Colombia, and Puerto Rico to understand women's experiences of Zika virus (ZIKV) test and outcome-related communication during the ZIKV pandemic. We used thematic analysis to analyze the in-depth interviews. Participants in Brazil and Colombia reported that the healthcare system's lack of preparation and organization in communicating ZIKV test results and associated adverse outcomes led to their feeling abandoned and alone in confronting the challenges of a ZIKV-affected pregnancy. In contrast, participants in Puerto Rico reported that the regular testing schedules and clear, well-planned communication between the care team and between providers and pregnant women helped them to feel they could prepare for a ZIKV-affected pregnancy. Communication of the risk associated with an emerging pathogen suspected to affect pregnancy and developmental outcomes is a fraught issue. Public health authorities and healthcare providers should work together in the interpandemic period to understand families' preferences for risk communication during pregnancy in the presence of uncertainty and develop a community-informed plan for risk communication.

Zika virus prevention behaviors and knowledge among male partners of pregnant people and lack of condom use as a prevention behavior from the Zika en Embarazadas y Niños (ZEN) prospective cohort study, Colombia

OBJECTIVE

Zika virus (ZIKV) infection in pregnancy can cause brain and eye abnormalities and neurodevelopmental sequelae. In the absence of medical countermeasures, behavioral interventions were recommended to prevent mosquito bites and sexual transmission of ZIKV. This report uses data from the Zika en Embarazadas y Niños (ZEN) prospective cohort study in Colombia to describe the knowledge, attitudes, and behaviors (KAB) related to ZIKV prevention in male partners compared to those of their pregnant partners at study enrollment during February 2017-2018.

RESULTS

Most male partners reported wearing protective clothing such as long pants (97.6%) and long sleeves (72.8%), as well as covering ankles and feet (89.1%) to prevent ZIKV infection. When comparing the preventive behavior of condom use between male and pregnant partners, 26 pairs (10.0%) both responded that they performed the behavior. Overall, 25.1% of male partners and 18.9% of pregnant people reported any condom use during the three months before enrolling in ZEN. When comparing other preventive behaviors between male and pregnant partners, the behavior which was most frequently reported by both partners was wearing long pants (85.4%), and the least frequently reported by both partners was using condoms after finding out about a partner's pregnancy (3.4%).

Disruption of myelin structure and oligodendrocyte maturation in a pigtail macaque model of congenital Zika infection

Zika virus (ZikV) infection during pregnancy can cause congenital Zika syndrome (CZS) and neurodevelopmental delay in non-microcephalic infants, of which the pathogenesis remains poorly understood. We utilized an established pigtail macaque maternal-to-fetal ZikV infection/exposure model to study fetal brain pathophysiology of CZS manifesting from ZikV exposure in utero. We found prenatal ZikV exposure led to profound disruption of fetal myelin, with extensive downregulation in gene expression for key components of oligodendrocyte maturation and myelin production. Immunohistochemical analyses revealed marked decreases in myelin basic protein intensity and myelinated fiber density in ZikV-exposed animals. At the ultrastructural level, the myelin sheath in ZikV-exposed animals showed multi-focal decompaction consistent with perturbation or remodeling of previously formed myelin, occurring concomitant with dysregulation of oligodendrocyte gene expression and maturation. These findings define fetal neuropathological profiles of ZikV-linked brain injury underlying CZS resulting from ZikV exposure in utero. Because myelin is critical for cortical development, ZikV-related perturbations in oligodendrocyte function may have long-term consequences on childhood neurodevelopment, even in the absence of overt microcephaly.

Identification of risk areas for arboviruses transmitted by Aedes aegypti in northern Brazil: A One Health analysis

Introduction

The complex and growing problem generated by the rapid expansion of unplanned urban areas includes high population density and increased infestation by vectors responsible for the transmission of several diseases. This requires interdisciplinary and intersectoral interventions due to the burden of diseases, especially those caused by arboviruses, which can present severe forms and generate significant pressure on health systems, especially in more vulnerable regions. The objective of this study was to analyze the spatial distribution of arboviruses transmitted by Aedes aegypti (dengue, Zika, and chikungunya) and assess their correlations with demographic, social, and environmental data from the state of Tocantins, Brazil.

Methods

This was an ecological time series study of the dengue, Zika, and chikungunya arboviruses in the state of Tocantins. Local Moran's indices were used to observe the spatial autocorrelation of cases and to delimit clusters of high and low risks, correlating them with socioenvironmental indicators, in addition to analyses to detect case clusters.

Results

The state reported a mean incidence of 591 annual cases of arbovirus infections per 100,000 inhabitants and a stationary trend with seasonal pattern. Female Pardo individuals aged 20-39 years, with an education level of below college education, were the most affected; Palmas and Araguaína, the two largest cities in the state in terms of economy and population, were the most affected.

Conclusion

A better understanding of the interaction between social characteristics, the environment, and ecology of wild animals and vectors is important for the development of mechanisms to predict outbreaks as well as to develop strategies to reduce and/or mitigate recurring arboviral epidemics and other diseases.

The Zika virus: an opportunity to revisit reproductive health needs and disparities

First isolated in 1947, the Zika virus was initially connected only to limited or sporadic human infections. In late 2015, the temporal clustering of a Zika outbreak and microcephaly in newborn babies from northeastern Brazil, and the identification of a causal link between the two, led to the characterization of the congenital Zika syndrome. In the wake of the epidemic, several countries from Latin America advised women to postpone pregnancies for periods ranging from six months to two years. These recommendations initiated critical conversations about the challenges of implementing them in societies with limited access to contraception, widespread socioeconomic inequalities, and high rates of unplanned and adolescent pregnancies. The messaging targeted exclusively women, despite a high prevalence of imbalances in the relationship power, and addressed all women as a group, failing to recognize that the decision to postpone pregnancies will impact different women in different ways, depending on their age at the time. Finally, in several countries affected by the Zika epidemic, due to restrictive reproductive policies, legally terminating a pregnancy is no longer an option even at the earliest time when brain malformations as part of the congenital Zika syndrome can be detected by ultrasonography. The virus continued to circulate after 2016 in several countries. Climate change models predict an expansion of the geographical area where local Zika transmission may occur, indicating that the interface between the virus, teratogenesis, and reproductive rights is a topic of considerable interest for medicine, social sciences, and public health for years to come.

Experiences of women raising children with congenital Zika syndrome along a trajectory of prevention, care and support in Brazil

Social science research investigating the social dynamics of Zika and congenital Zika syndrome (CZS) is essential to inform future services related to Zika and other infectious diseases. We sought to understand lived experiences with Zika during pregnancy, birth, and post-partum by conducting in-depth interviews with a sample of 31 women infected with Zika during the 2015-16 outbreak who had a child with CZS in Pernambuco, Brazil. Transcripts were coded using thematic content analysis. Many women experienced shock when their children were born with CZS given the lack of information they were provided during the antenatal period. Stigma from loved ones and community members was a salient theme as were financial difficulties arising from women having to stop working to care for their child. While women experienced significant challenges caring for a child with CZS, they also exhibited resiliency in their ability to move from shock and sorrow to focusing on the needs of their child. While support services were generally available, they were often located at a significant distance. Results underscore the need for interventions to improve patient-provider communication, address socio-structural stressors, and support individual and collective resilience in women and families affected by Zika in lower resource settings.

The global trends and regional differences in incidence of Zika virus infection and implications for Zika virus infection prevention

Background

Zika virus (ZIKV) infection has potential result in severe birth effects. An improved understanding of global trend and regional differences is needed.

Methods

Annual ZIKV infection episodes and incidence rates were collected from Global Burden of Disease Study 2019. Episodes changes and estimated annual percentage changes (EAPCs) of age-standardized incidence rate (ASR) were calculated. Top passenger airport-pairs were obtained from the International Air Transport Association to understand places susceptible to imported ZIKV cases.

Results

Globally, the ASR increased by an average of 72.85% (95%CI: 16.47% to 156.53%) per year from 2011 to 2015 and subsequently decreased from 20.25 per 100,000 in 2015 to 3.44 per 100,000 in 2019. Most of ZIKV infections clustered in Latin America. The proportion of episodes in Central and Tropical Latin America decreased in 2019 with sporadic episodes elsewhere. High Socio-Demographic Index (SDI) regions had more episodes in 2019 than in 2015. Additionally, 15–49 years group had the largest proportion of episodes, females had a higher number of episodes, and a higher incidence rate of 70 plus group was observed in males than females. Certain cities in Europe, North America and Latin America/Caribbean had a high population mobility in ZIKV outbreak areas considered a high risk of imported cases.

Conclusions

ZIKV infection is still a public health threat in Latin America and Caribbean and high SDI regions suffered an increasing trend of ZIKV infection. Interventions such as development of surveillance networks and vector-control should be attached to ZIKV control in these key regions. Reproductive suggestions should be taken to reduce ZIKV-related birth defects for the people of reproductive age who are facing a higher threat of ZIKV infection, especially females. Moreover, surveillance of travellers is needed to reverse the uptrends of travel-related imported ZIKV infection. More studies focusing on ZIKV should be performed to make targeted and effective prevention strategies in the future.

Zika virus (ZIKV) infection is a mosquito-borne illness and has potential result in severe birth effects. Currently, ZIKV is still causing an unprecedented ongoing epidemic in Latin America and threatening North America and potentially the rest of the world. This is the first study to assess the global landscape, long-term trends and regional differences in the incidence of ZIKV infection using the data from Global Burden of Disease (GBD) Study 2019, including the description of ZIKV infection episodes by different sex and by different year group, as well as the relationship between international travellers and imported ZIKV cases. Our study can not only serve as complement to previous studies, but also provide a more comprehensive perspective of global ZIKV infection prevention strategies.

Health needs of mothers of children with Congenital Zika Syndrome: an integrative review

ABSTRACT Objectives: to evidence and analyze the health needs of mothers of children with Congenital Zika Syndrome. Methods: a total of 44 articles published between October/2015 and March/2021 on PubMed, LILACS, Scopus, Web of Science and Science Direct were included. The RTI bank and CASP score were applied to classify the methodological quality of the studies. Reflective content analysis and Cecílio and Matsumoto’s taxonomy were used for analysis. Visual map was used as a technique for presenting the results. Results: mothers need access to social protection, family-centered, multi-professional empathetic monitoring, cultivating bonds and affection by professionals, sharing of care between health network services, strengthening the social support network and fostering coexistence groups between them. Final Considerations: intersectoral initiatives must be implemented for better housing conditions, fighting stigma, holding parents accountable and resuming life project.

Women, Administered Insecurity, and Multiple Alignments to Assuage Gender Inequalities in the Brazilian Zika Epidemic

This article deals with the Brazilian Zika epidemic that started in 2015 and became an important event for understanding Gender and Power in health treatment contexts. It discusses a combination of reinforcement of gender normed care and therapeutic itineraries overburdening mothers and the construction of political awareness and practice associated with demands for state services. Working with a concept of administered insecurity elaborated to understand people displaced during the implementation of planned government development policies, it argues that the planned nature of health systems, despite their explicit emphasis on the objective of treating the health of the population, also generate administered insecurity as planned administrators of scarcity. It uses data from a 4-year research project entitled “Doing Ethnography on Care” in Recife, Brazil, to show the multiplicity of contexts that are brought out through the practice of mothers in providing care for their Zika-syndrome stricken children, and how they reflect varying power relations that constantly re-dimension maternity along lines of gender relations in different institutional domains of treatment and research. The severe gender inequality in caring for infants was partially assuaged by multiple alignments made by the mothers and infants promoting dialogue and practice in varied contexts, including interaction with the research team. Family and Community Relations, Mediation, Favors, Accusations, Judicialization, Collective Action, formation of Associations, and learning to produce videos are seen as constructors of complex meaning and practice of mothering in a way in which gender goes beyond the limits of an overburdening practice of care. Gender provides a significant difference for mothers whose knowledge and familiarity of domains of health and health-related provision of services and knowledge, forged in their search for treatment for their child, create and legitimate spaces for the exercise of informed citizenship and a sharp awareness and resistance to practices by the state and other agents who administer insecurity. The final remarks synthesize some of the more important reconfigurations of gender relations and power in the context of the Zika epidemic and alerts to the challenge of the transitory nature of an epidemic and the gradual, and not so gradual, exhaustion of institutional interest for the dilemma of the mothers and also shows the role of anthropological research in promoting gender equality in epidemic contexts.

Abortion in the times of Zika: the perspective of women in two Brazilian municipalities

In Brazil, abortion is considered a crime under the Criminal Code since 1940. After the Zika virus epidemic (2015-2017) and the consequent appearance of microcephaly in newborns struck South America, the debate on the decriminalization of abortion in the Brazilian society was reignited. Using data obtained from focus groups comprising women of reproductive age across different socioeconomic strata and two Brazilian cities, we investigated the perceptions of the participants on abortion, especially its use during the Zika epidemic. Although legally criminalized, abortion is prevalent among women, as a way to fulfill their reproductive desire. Criminalization puts the health and lives of women at risk, particularly those with less economic and cultural capital. We also discover the role of friends in women's decision to utilize the procedure. The strong asymmetry of power between men and women contributes to the greater vulnerability of women. The results suggest an urgent need to review the legislation on abortion concerning its criminalization and the option of safer abortion within the scope of the public health service.