This study is not for real-time diagnostic purposes, guidance for patient care, or the development of a diagnostic test. The research tests performed for this study will not be prioritized over clinical care samples, that research samples will be batched and tested after clinical care samples. This study is a population-based epidemiologic analysis of prevalence of various groups of persons.~Group (1) general healthy population. People 18 years of age and older that have not tested positive for SARS-CoV-2 and who have not sought medical help in the previous 4 months.~Group (2) Medical School Residents , 18 years of age and older that have not tested positive for SARS-CoV-2 Group (3) Individuals who are HIV positive. People 18 years of age and older that have not tested positive for SARS-CoV-2
The purpose of this epidemiologic study is to estimate the prevalence and incidence of anti-SARS-CoV-2 antibodies in at-risk, exposed, affected populations. The study will also estimate the risk of SARS-CoV-2 exposure in target population.