Inclusion Criteria for patients:
- adult patient
- Patient with Covid-19 confirmed by RT-PCR, supported by Poitiers hospital
- Patient came for RT-PCR test at the drive of the hospital, or hospitalised in one of the Covid-19 departments of the Poitiers hospital (geriatry, infectious and tropical diseases, medical resuscitation and continuous care unit)
- informed consent signed by the patient or a trusted or immediate person after clear and loyal information on the study
Exclusion Criteria for patients:
- minor patient
- patient having had syptoms for more than 8 days
- patient already enrolled in another study regarding immunomodulators
- patient not benefiting from a Social Security scheme or not benefiting from it through a third party
- patient benefiting from enhanced protection, namely minors, persons deprived of their liberty by a judicial or administrative decision, adult under legal protection
Inclusion Criteria for volunteers:
- adult patient
- subject wishing to be vaccinated with anti-COVID-19 BioNTech Pfizer vaccine
- informed consent signed by the volunteer after clear and loyal information on the study
Exclusion Criteria for volunteers:
- minor patient
- subject having had COVID-19 documented by a positive RT-PCR test or serology
- subject already vaccinated against COVID-19 (complete or partial vaccinal scheme)
- patient not benefiting from a Social Security scheme or not benefiting from it through a third party
- patient benefiting from enhanced protection, namely minors, persons deprived of their liberty by a judicial or administrative decision, adult under legal protection