inclusion criteria: * diagnosis of covid-19 (-) * works in a medical intensive care unit exposed to covid-19 infection * 18 years old \< age \< 65 years old * having given written consent for their participation in the study.

inclusion criteria: * diagnosis of covid-19 (-) * works in a medical intensive care unit exposed to covid-19 infection * 18 years old \< age \< 65 years old * having given written consent for their participation in the study.

inclusion criteria: - diagnosis of covid-19 (-) - works in a medical intensive care unit exposed to covid-19 infection - 18 years old < age < 65 years old - having given written consent for their participation in the study.

inclusion criteria: - diagnosis of covid-19 (-) - works in a medical intensive care unit exposed to covid-19 infection - 18 years old < age < 65 years old - having given written consent for their participation in the study.