Seroprevalence of SARS-CoV-2–Specific 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–specific antibodies among quarantined close contacts of COVID-19 patients in the Faroe Islands. We invited quarantin...

Full description

Bibliographic Details
Main Authors: Maria Skaalum Petersen, Marnar Fríðheim Kristiansen, Halla Weihe Reinert, Jógvan Páll Fjallsbak, Debes Hammershaimb Christiansen, Shahin Gaini, Bjarni á Steig, Lars Fodgaard Møller, Marin Strøm, Pál Weihe
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2021-11-01
Series:Emerging Infectious Diseases
Subjects:
Online Access:https://wwwnc.cdc.gov/eid/article/27/11/20-4948_article
_version_ 1818822150374555648
author Maria Skaalum Petersen
Marnar Fríðheim Kristiansen
Halla Weihe Reinert
Jógvan Páll Fjallsbak
Debes Hammershaimb Christiansen
Shahin Gaini
Bjarni á Steig
Lars Fodgaard Møller
Marin Strøm
Pál Weihe
author_facet Maria Skaalum Petersen
Marnar Fríðheim Kristiansen
Halla Weihe Reinert
Jógvan Páll Fjallsbak
Debes Hammershaimb Christiansen
Shahin Gaini
Bjarni á Steig
Lars Fodgaard Møller
Marin Strøm
Pál Weihe
author_sort Maria Skaalum Petersen
collection DOAJ
description 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–specific antibodies among quarantined close contacts of COVID-19 patients in the Faroe Islands. We invited quarantined close contacts of COVID-19 index patients identified 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 SARS-CoV-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.
first_indexed 2024-12-18T23:19:30Z
format Article
id doaj.art-347b95c914674ae3b940bfc386d07771
institution Directory Open Access Journal
issn 1080-6040
1080-6059
language English
last_indexed 2024-12-18T23:19:30Z
publishDate 2021-11-01
publisher Centers for Disease Control and Prevention
record_format Article
series Emerging Infectious Diseases
spelling doaj.art-347b95c914674ae3b940bfc386d077712022-12-21T20:48:03ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592021-11-0127112795280110.3201/eid2711.204948Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020Maria Skaalum PetersenMarnar Fríðheim KristiansenHalla Weihe ReinertJógvan Páll FjallsbakDebes Hammershaimb ChristiansenShahin GainiBjarni á SteigLars Fodgaard MøllerMarin StrømPál WeiheClose 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–specific antibodies among quarantined close contacts of COVID-19 patients in the Faroe Islands. We invited quarantined close contacts of COVID-19 index patients identified 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 SARS-CoV-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.https://wwwnc.cdc.gov/eid/article/27/11/20-4948_articleSARS-CoV-2 seroprevalenceclose contactsFaroe Islandssecondary attack rateSARS-CoV-2COVID-19
spellingShingle Maria Skaalum Petersen
Marnar Fríðheim Kristiansen
Halla Weihe Reinert
Jógvan Páll Fjallsbak
Debes Hammershaimb Christiansen
Shahin Gaini
Bjarni á Steig
Lars Fodgaard Møller
Marin Strøm
Pál Weihe
Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
Emerging Infectious Diseases
SARS-CoV-2 seroprevalence
close contacts
Faroe Islands
secondary attack rate
SARS-CoV-2
COVID-19
title Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
title_full Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
title_fullStr Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
title_full_unstemmed Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
title_short Seroprevalence of SARS-CoV-2–Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
title_sort seroprevalence of sars cov 2 specific antibodies among quarantined close contacts of covid 19 patients faroe islands 2020
topic SARS-CoV-2 seroprevalence
close contacts
Faroe Islands
secondary attack rate
SARS-CoV-2
COVID-19
url https://wwwnc.cdc.gov/eid/article/27/11/20-4948_article
work_keys_str_mv AT mariaskaalumpetersen seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT marnarfriðheimkristiansen seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT hallaweihereinert seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT jogvanpallfjallsbak seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT debeshammershaimbchristiansen seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT shahingaini seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT bjarniasteig seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT larsfodgaardmøller seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT marinstrøm seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020
AT palweihe seroprevalenceofsarscov2specificantibodiesamongquarantinedclosecontactsofcovid19patientsfaroeislands2020