ArticleLancet regional health. Americas2022
Incidence of SARS-CoV-2 over four epidemic waves in a low-resource community in Rio de Janeiro, Brazil: A prospective cohort study.
Article in Lancet regional health. Americas, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 16 citations in OpenAlex.
- Implementing a multi-centric cohort study during the SARS-CoV-2 pandemic in a resource-constrained setting: challenges, adaptive solutions, and lessons from Brazil.Archives of public health = Archives belges de sante publique · 2026Article
- Prevalence of SARS-CoV-2 Infection Among Vulnerable Populations Relying on Public Health Services: Findings from the AVISA Study in Brazil.Revista da Sociedade Brasileira de Medicina Tropical · 2026Article
- Article
- Cohort profile: follow-up of a household cohort throughout five epidemic waves of SARS-CoV-2 in Rio de Janeiro, Brazil.Cadernos de saude publica · 2024Article
- Article
- SARS-CoV-2 Reinfection Cases in a Household-Based Prospective Cohort in Rio de Janeiro.The Journal of infectious diseases · 2023Article
- The Role of Children in Household Transmission of SARS-CoV-2 Across Four Waves of the Pandemic.Journal of the Pediatric Infectious Diseases Society · 2023Article
- Reduced ability to neutralize the Omicron variant among adults after infection and complete vaccination with BNT162b2, ChAdOx1, or CoronaVac and heterologous boosting.Scientific reports · 2023Article
- Effectiveness of a multicomponent intervention to face the COVID-19 pandemic in Rio de Janeiro's favelas: difference-in-differences analysis.BMJ global health · 2023Article
- Severe maternal morbidity and mortality during the COVID-19 pandemic: a cohort study in Rio de Janeiro.IJID regions · 2023Article
- Association Between Population-Level Factors and Household Secondary Attack Rate of SARS-CoV-2: A Systematic Review and Meta-analysis.Open forum infectious diseases · 2023Article
- The Age-Related Course of COVID-19 in Pediatric Patients-1405 Cases in a Single Center.Journal of clinical medicine · 2022Article
- Cohort-profile: Household transmission of SARS-CoV-2 in a low-resource community in Rio de Janeiro, Brazil.BMJ open · 2022Article
- Prevalence and predictors of anti-SARS-CoV-2 serology in a highly vulnerable population of Rio de Janeiro: A population-based serosurvey.Lancet regional health. Americas · 2022Article
- Dynamics of SARS-CoV-2 Variants of Concern in Vaccination Model City in the State of Sao Paulo, Brazil.Viruses · 2022Article
- Government inaction on COVID-19 vaccines contributes to the persistence of childism in Brazil.Lancet regional health. Americas · 2022Article
Corrections and comments
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Authors and funding
11 authors at 2 institutions in 2 countries.
Funding
Abstract
Background: Incidence rates of SARS-CoV-2 infections in low-resource communities can inform vaccination strategies and non-pharmaceutical interventions (NPIs). Our objective was to estimate incidence over four epidemic waves in a slum in Rio de Janeiro, a proxy for economically deprived areas in the Global South. Methods: Prospective cohort of children and household contacts screened for SARS-CoV-2 by PCR and serology (IgG). The incidence density of PCR positive infections estimated for each wave - the first wave, Zeta, Gamma and Delta - was compared to an index combining NPIs and vaccination coverage. Findings: 718 families and 2501 individuals were enrolled, from May 2020 to November 2021. The incidence density of SARS-CoV-2 infection due to the first wave was 2, 3 times that of the other waves. The incidence among children was lower than that of older participants, except in later waves, when vaccination of the elderly reached 90%. Household agglomeration was significantly associated with incidence only during the first wave. Interpretation: The incidence of infection greatly exceeded rates reported in similar cohorts. The observed reduction in incidence in the elderly during the Delta variant wave, in spite of the rollback of NPIs, can be attributed to increased vaccine coverage. The high incidence in young people reinforces the importance of vaccination in this age group, a policy that has yet to receive the full support of some sectors of society. Funding: UK Medical Research Council, Foundation for the Advancement of Science of the State of Rio de Janeiro, National Council for Scientific and Technological Development.
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