Seroprevalence of SARS-CoV-2 antibodies in Bangladesh related to novel coronavirus infection

•30% of the Bangladeshi population were found to be seropositive for severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) immunoglobulin G antibodies.•The highest seroprevalence rate (64%) was found in slum areas in Bangladesh.•Thirty-eight percent and 29% of participants from urban and rural areas were SARS-CoV-2 seropositive.•The highest seroprevalence rate for coronavirus disease 2019 was observed in August 2020.