;"Group 1";"Group 2";"Group 3";"Group 4" "Epidemio-logical connection";Medic;"Travel to France";"Contact with ill person, returned from abroad";Minority "Rapid test (IgM, IgG antibodies)";Negative;"Positive (Ig M, Ig G)";"Positive (Ig M, Ig G)";Negative "RT-PCR test";Positive;Negative;Negative;Positive "Clinical picture";"Febrile above 38 °C, fatigue, loss of appe-tite, shortness of breath";"Febrile below 38 °C, dry cough, muscle aches, fatigue, loss of appetite";"Febrile above 38 °C, fatigue, muscle aches, cough, no shortness of breath";"Febrile below 38 °C shortness of breath, cough, dizziness" "Concomitant disease";None;"Chronic hepatitis B";None;"Arterial hypertension" "RT-PCR test at discharge";negative;negative;negative;negative "Hospital stay";"12 days";"10 days";"14 days";"16 days"