Any person, male or female, over 18 years of age at the time of signing the consent

Any person affiliated to a social health insurance scheme

Any person able to understand the objectives and risks related to research and to give an informed, dated and signed consent

Any person who is part of HUS staff and working at HUS at the time of the pandemic, including residents affiliated with HUS and assigned to general hospitals in the region

Any symptomatic person with a positive COVID result (PCR + group) or negative (PCR- group) with a RT-PCR test carried out at least 10 days before inclusion, or any person, for which no COVID PCR was performed (group " No PCR")

Seroprevalence of SARS-CoV-2 in Strasbourg University Hospital, Strasbourg, France (COVID-19)

What this study is about