- volunteer with clinical signs of acute respiratory infectious disease - volunteer living with a person with clinical signs of acute respiratory infectious disease - volunteer with a risk factor for severe covid-19 - volunteer who had a covid-19 infection in the 3 months prior to the study - volunteer who are not affiliated to the social security system - volunteer vaccinated against covid-19 - pregnant women and people living with pregnant women - persons deprived of liberty - adult with legal protection - volunteer unable to comply with protective measures, at the concert or at home - volunteer participating in another clinical research study

- volunteer with clinical signs of acute respiratory infectious disease - volunteer living with a person with clinical signs of acute respiratory infectious disease - volunteer with a risk factor for severe covid-19 - volunteer who had a covid-19 infection in the 3 months prior to the study - volunteer who are not affiliated to the social security system - volunteer vaccinated against covid-19 - pregnant women and people living with pregnant women - persons deprived of liberty - adult with legal protection - volunteer unable to comply with protective measures, at the concert or at home - volunteer participating in another clinical research study