Study of the Immunological and Virological Response of Patients With COVID-19 and Presenting an Asymptomatic or Pauci-symptomatic Form (AMBUCOV)

Inclusion Criteria: * Adult patients * Nasopharyngeal PCR positive for SARS-CoV-2 within 48 hours prior to inclusion in the study protocol, carried out in one of the participating outpatient screening centers * Symptomatic patients (nasopharyngeal screening positive due to suggestive symptoms) or asymptomatic (nasopharyngeal screening positive due to screening after contact with a positive subject) * Patients who have been informed and signed the consent * Pregnant and breastfeeding women who may be included in the study. Exclusion Criteria: * Patients with criteria for hospitalization at the time of diagnosis (seriousness criteria, impossibility of staying at home) * Non-consent or inability to obtain consent, * Patient with dementia or not authorized, for psychiatric reasons or intellectual failure, to receive information on the protocol and to give informed consent, * Patient under guardianship / curatorship