OBJECTIVES: To examine seroprevalence of SARS-CoV-2 antibodies in industry workers population sample .
METHODS: From 23 to 28 April 2020, we conducted serological testing for antibodies (IgG and IgM) on 1494 factory employees living in the Split-Dalmatia and Sibenik-Knin County (Croatia).
RESULTS: We detected antibodies in 1.27% of participants (95% CI 0.77-1.98 %). In Split facility 13/1316 (0.99% , 95% CI 0.53-1.68 %) of participants were tested positive, of which 13/1079 (1.20% , 95% CI 0.64-2.05 %) of those living outside the facility and 0/237 (0% , 95% CI 0-1.26 %) of those living inside the facility . In Knin facility , 6/178 (3.37% , 95% CI 1.25-7.19 %) participants were tested positive for antibodies .
CONCLUSIONS: The study showed relatively small SARS-CoV-2 antibody seroprevalence in the DIV Group population sample.