Coronavirus disease 2019 (COVID-19) seroprevalence studies have been used since early in the pandemic to identify population immunity, rates of transmission, risk factors, and the response of ‘immune’ individuals to variants of concern. Generally, these studies involve gathering serum from individuals, recording evidence of prior COVID-19 infection/vaccination, and then examining the response of the sera using commercially available assays for antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) proteins.
