Healthy Clinical Trial
Official title:
Police Officer COVID-19 Seroprevalence Survey in the Canton of Bern, Switzerland
The investigators aim to determine the immune status of the employees of the cantonal police of Bern against SARS-CoV-2 over a period of 1 year, and to investigate the risk profile of the study participants and their risk of SARS-CoV-2 exposure in their working and private environments, as well as to evaluate the use of personal protective equipment at potential exposure instances.
i) To determine the extent of infection with seroprevalence data in the special population of police officers of the canton Bern. ii) To determine risk factors for infection by comparing the proportion of seropositivity (infected versus noninfected individuals). The investigators hypothesize that police officers with fieldwork activity will have a higher seroprevalence than will office and administration personnel. The investigators hypothesize that working in the city of Bern will be associated with a higher seroprevalence than will working in other geographic areas of the canton (i.e. rural area). iii) To monitor COVID-19 antibody titres and neutralizing capacity over time and to associate them with reinfection rates and infection-free intervals in police officers after accidental contact with a proven COVID-19 case. The investigators hypothesize that in seropositive individuals, there will be a decreasing dynamic of antibody titres over the one-year study period, and hence, a decrease of neutralizing capacity. ;
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