Sero-pravelence of SARS CoV-2 IgM and IgG Antibodies Amongst Blood Donors in Nigeria

Abstract Background: Currently in Nigeria, SARS CoV-2 infection control measures rely solely on RT-PCR testing of cases with high index of suspicion for COVID-19. The sero-prevalence of SARS-CoV-2-specific antibodies in the populations remains unknown. We aimed to determine the sero-prevalence of SARS CoV-2 IgM and IgG in screened blood donors in two selected cities in Nigeria. Methods: A total of 113 blood samples from screened and accepted blood donors were tested for both SARS CoV-2 IgM and IgG antibodies using NOVATECH ELISA kits from Eurofins Germany. Results: The age range of donor was 21-48 years. Males were 96 %. Of the 113 blood donors 42% were positive for SARS CoV-2 IgG while 41% were positive for SARS CoV-2 IgM respectively. Only 11% and 19% of blood donors had equivocal test result for IgG and IgM respectively.Conclusions: Nearly a half of accepted blood donors in Nigeria had been exposed to SARS CoV-2 infection. Although it is not a blood transmissible infection, the blood banks must take adequate preventive measures to prevent spread amongst the bank staff and potential donors. It also implies a wider spread of the infection in Nigeria.Trial Registration: The study does not require registration.