Study of the incidence of SARS-CoV-2 infection in the Alpes-Maritimes administrative department based on the analysis of specific humoral and cellular response while easing lockdown restrictions FRESH-PEF73574-en Jonathan ALLOUCHE Study of the incidence of SARS-CoV-2 infection in the Alpes-Maritimes administrative department based on the analysis of specific humoral and cellular response while easing lockdown restrictions COVIMMUNE 2 FRESH-PEF73574-en 73574 FRESH-PEF73574 Kévin ZORZI CENTRE HOSPITALIER UNIVERSITAIRE DE NICE Epidemiology France Portal (PEF) CENTRE HOSPITALIER UNIVERSITAIRE DE NICE DEPARTEMENT DES ALPES MARITIMES null Jonathan;ALLOUCHE Christian;PRADIER Barbara;SEITZ-POLSKI Kévin;ZORZI easing of lockdown restrictions interferon SARS-CoV-2 COVID-19 Serology immunovirology incidence Clinical immunology Infectious disease medicine COVID-19 Socio-demographic and economic determinants Environmental determinants: Other Behavioral determinants Environmental determinants Socio-demographic and economic determinants: Employment Determine the incidence of SARS-CoV-2 infection, over an 18-month period after the end of the first lockdown in a group of subjects whose professions involve contact with the general public. Determine the risk of re-infection after initial infection with SARS-CoV-2 confirmed by a positive serology test. null France Provence - Alpes - Côte d\'Azur Individuals General population Male Female Young Adult (19 to 24 years) Adult (25 to 44 years) Middle Aged (45 to 64 years) Aged (65 to 79 years) Aged, 80 and over (80 years and more) Any healthy adult volunteers, exposed to the general public from 11 May 2020, informed of the study via partner institutions (06 Administrative Department Council), registered with a social security scheme. Clinical data Participant-reported health data Biological data Socio-demographic data Paraclinical data (non-biological) : Anthropometry Verification of electronic data entry. Database data management with consistency tests. Patients are informed of the use of their data. Health event/morbidity Quality of life/health perception Other Through organizations (health services or institutions schools businesses etc.) Population database for statistical purposes [500-1000[ individuals Self-administered questionnaire Interview with the participant (including clinical) Observational Study Observational Study Cohort study Approximately 560 Unknown To be defined