Seroprevalence of sars-cov-2- specifi c antibodies among quarantined close contacts of covid-19 patients, faroe islands, 2020

Close contacts of coronavirus disease (COVID-19) patients are at high risk for severe acute respiratory syndrome 2 (SARS-CoV-2) infection. We assessed the seroprevalence of SARS-CoV-2-specifi c antibodies among quarantined close contacts of COVID-19 patients in the Faroe Islands. We invited quaranti...

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Bibliographic Details
Published in:Emerging Infectious Diseases
Main Authors: Petersen, Maria Skaalum, Kristiansen, Marnar Frí heim, Reinert, Halla Weihe, Fjallsbak, Jógvan Páll, Christiansen, Debes Hammershaimb, Gaini, Shahin, á Steig, Bjarni, Møller, Lars Fodgaard, Strøm, Marin, Weihe, Pál
Format: Article in Journal/Newspaper
Language:English
Published: 2021
Subjects:
Faroe Islands
Online Access:https://portal.findresearcher.sdu.dk/da/publications/fd977b93-476e-424f-b2f1-85579813808e
https://doi.org/10.3201/eid2711.204948
https://findresearcher.sdu.dk/ws/files/194771805/20_4948.pdf
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Summary:Close contacts of coronavirus disease (COVID-19) patients are at high risk for severe acute respiratory syndrome 2 (SARS-CoV-2) infection. We assessed the seroprevalence of SARS-CoV-2-specifi c antibodies among quarantined close contacts of COVID-19 patients in the Faroe Islands. We invited quarantined close contacts of COVID-19 index patients identifi ed during March 3-April 22, 2020, to participate in this study; 584 (81%) contacts consented and underwent serologic testing. Among the 584 participants, 32 (5.5%) were seropositive for total antibody against SARSCoV- 2. Household and young or elderly contacts had higher risk for seropositivity than other contacts.We found a secondary attack rate of 19.2%. Seroprevalence among close contacts was almost 10-fold higher than among the general population of the Faroe Islands. Regularly testing household close contacts of COVID-19 patients might help track the transmission of SARS-CoV-2.

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