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Comment
. 2021 May;82(5):186-230.
doi: 10.1016/j.jinf.2020.11.037. Epub 2020 Dec 1.

SARS-CoV-2 has been circulating in northeastern Brazil since February 2020: evidence for antibody detection in asymptomatic patients

Ricardo Queiroz Gurgel  1 , Laís Catarine de Sá  2 , Daniela Raguer Valadão Souza  3 , Aline Fagundes Martins  3 , Igor Leonardo Santos Matos  4 , Alexandra Giovanna Aragão Lima  2 , Sarah Cristina Fontes Vieira  1 , José Melquiades de Rezende Neto  3 , Luis Eduardo Cuevas  5 , Lysandro Pinto Borges  6
Affiliations
Comment

SARS-CoV-2 has been circulating in northeastern Brazil since February 2020: evidence for antibody detection in asymptomatic patients

Ricardo Queiroz Gurgel et al. J Infect. 2021 May.

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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Figures

Fig. 1
Fig. 1
Analysis of the timeline of events, with the evolution of SARS-CoV-2 in the world, Brazil and Sergipe Legend: Red: our results; Blue: world events; Black: official notification.
See this image and copyright information in PMC

Comment in

Comment on

  • Viral transmission in asymptomatic cases of SARS-CoV-2 infection.
    Grall I, Alloui CA, Tandjaoui-Lambiotte Y, Deslandes A, Seytre D, Chappe J, Carbonnelle E, Brichler S, Jacolot A, Zahar JR, Lomont A. Grall I, et al. J Infect. 2021 Feb;82(2):282-327. doi: 10.1016/j.jinf.2020.08.044. Epub 2020 Aug 29. J Infect. 2021. PMID: 32871179 Free PMC article. No abstract available.

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