TY - JOUR
T1 - Seroprevalence of SARS-CoV-2-Specific Antibodies among Quarantined Close Contacts of COVID-19 Patients, Faroe Islands, 2020
AU - Petersen, Maria Skaalum
AU - Kristiansen, Marnar Fríðheim
AU - Reinert, Halla Weihe
AU - Fjallsbak, Jógvan Páll
AU - Christiansen, Debes Hammershaimb
AU - Gaini, Shahin
AU - Steig, Bjarni á
AU - Møller, Lars Fodgaard
AU - Strøm, Marin
AU - Weihe, Pál Magni
PY - 2021/8/26
Y1 - 2021/8/26
N2 - 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.
AB - 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.
UR - https://doi.org/10.3201/eid2711.204948
UR - http://www.ncbi.nlm.nih.gov/pubmed/34437829
UR - https://www.mendeley.com/catalogue/5cd76135-7778-3944-a411-27175a323380/
U2 - 10.3201/eid2711.204948
DO - 10.3201/eid2711.204948
M3 - Article
C2 - 34437829
VL - 27
SP - 2795
EP - 2801
JO - Emerging Infectious Diseases
JF - Emerging Infectious Diseases
SN - 1080-6040
IS - 11
M1 - 11
ER -