ArticleThe Journal of infection2021
SARS-CoV-2 has been circulating in northeastern Brazil since February 2020: evidence for antibody detection in asymptomatic patients.
Article in The Journal of infection, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Seroprevalence of SARS-CoV-2 in Brazil: A systematic review and meta-analysis.Clinics (Sao Paulo, Brazil) · 2023Pooled it
- SARS-CoV-2 antibody kinetics eight months from COVID-19 onset: Persistence of spike antibodies but loss of neutralizing antibodies in 24% of convalescent plasma donors.European journal of internal medicine · 2021Trial
- COVID-19 Crisis in Brazil: Post-Vaccination Seroprevalence and Infection in More and Less Vaccinated Municipalities in a Northeastern State.Life (Basel, Switzerland) · 2024Article
- Analysis of fatality impact and seroprevalence surveys in a community sustaining a SARS-CoV-2 superspreading event.Scientific reports · 2023Article
- Kinetics of SARS-CoV-2 IgM and IgG Antibodies 3 Months after COVID-19 Onset in Moroccan Patients.The American journal of tropical medicine and hygiene · 2023Article
- The increase in SARS-CoV-2 lineages during 2020-2022 in a state in the Brazilian Northeast is associated with a number of cases.Frontiers in public health · 2023Article
- A higher number of SARS-COV-2 infections in quilombola communities than in the local population in Brazil.Frontiers in public health · 2023Article
- Article
- Does In-Person Visiting Affect the Number of COVID-19 Cases in Prisons?Life (Basel, Switzerland) · 2021Article
- Estimated SARS-CoV-2 Infection and Seroprevalence in Firefighters from a Northeastern Brazilian State: A Cross-Sectional Study.International journal of environmental research and public health · 2021Observational
- Retrospective serosurveillance for anti-SARS-CoV-2 immunoglobulin during a time of low prevalence: A cautionary tale.The Journal of infection · 2021Article
- In-vitro evaluation of the immunomodulatory effects of Baricitinib: Implication for COVID-19 therapy.The Journal of infection · 2021Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We screened stored samples collected before COVID-19 had been reported in Brazil. 989 samples were tested for SAR-CoV-2 antibodies using two different methods; 16 (1.6%) were positive (7 (43.8%) IgM, 3 (18.8%) IgG and 6 (37.5%) IgG/IgM positive), suggesting SARS-CoV-2 had circulated before the first reported COVID-19 case in Brazil.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.