Risk of Symptomatic Infection During a Second Coronavirus Disease 2019 Wave in Severe Acute Respiratory Syndrome Coronavirus 2–Seropositive Individuals

Abstract We analyzed 221 coronavirus disease 2019 cases identified between June 2020 and January 2021 in 6074 individuals screened for immunoglobulin G antibodies in May 2020, representing 77% of residents of 5 Italian municipalities. The relative risk of developing symptomatic infection in seroposi...

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Bibliographic Details
Published in:Clinical infectious diseases 2022-03, Vol.74 (5), p.893-896
Main Authors: Manica, Mattia, Pancheri, Serena, Poletti, Piero, Giovanazzi, Giulia, Guzzetta, Giorgio, Trentini, Filippo, Marziano, Valentina, Ajelli, Marco, Grazia Zuccali, Maria, Benetollo, Pier Paolo, Merler, Stefano, Ferro, Antonio
Format: Article
Language:English
Subjects:
Antibodies, Viral
Brief Reports
COVID-19
Humans
Immunoglobulin G
Reinfection
SARS-CoV-2
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Summary:Abstract We analyzed 221 coronavirus disease 2019 cases identified between June 2020 and January 2021 in 6074 individuals screened for immunoglobulin G antibodies in May 2020, representing 77% of residents of 5 Italian municipalities. The relative risk of developing symptomatic infection in seropositive participants was 0.055 (95% confidence interval, .014–.220).
ISSN:1058-4838
1537-6591
1537-6591
DOI:10.1093/cid/ciab556