Screening for COVID-19 and Monitoring of Serological Responses to SARS-CoV-2 in Healthcare Workers

The main objectives of this study are 1) to establish the prevalence of SARS-CoV-2 in asymptomatic healthcare workers (HCWs) in an early phase of community spread as well as 2) to monitor the future spread of the disease by assessing serological responses to SARS-CoV-2 in symptomatic and asymptomatic HCWs over time and 3) to improve the assessment of the immune response and its protective effect as well as the assessment of infectivity of affected HCWs and 4) to evaluate the value and significance of antibody formation and serological antibody tests and 5) to be able to evaluate possible future preventive and / or therapeutic approaches against SARS-CoV-2, e.g. to assess vaccination effects