Repeated leftover serosurvey of SARS-CoV-2 IgG antibodies, Greece, March and April 2020
Zacharoula Bogogiannidou, Alexandros Vontas, Katerina Dadouli, Maria Kyritsi, Soteris Soteriades, Dimitrios J. Nikoulis, Varvara Α. Mouchtouri, Michalis Koureas, Evangelos Kazakos, Emmanouil Spanos, Georgia Gioula, Evangelia Ntzani, Alexandros A. Eleftheriou, Alkiviadis Vatopoulos, Efthimia Petinaki, Vassiliki Papaevangelou, Matthaios Speletas, Sotirios Tsiodras, Christos Hadjichristodoulou
Abstract
A serosurvey of IgG antibodies against severe acute respiratory coronavirus 2 (SARS-CoV-2) was performed during March and April 2020. Among 6,586 leftover sera, 24 (0.36%) were positive, with higher prevalence in females, older individuals and residents of large urban areas. Seroprevalence was estimated at 0.02% and 0.25%, respectively, in March and April, infection fatality rate at 2.66% and 0.54%. Our findings confirm low COVID-19 incidence in Greece and possibly the effectiveness of early measures.