The participation of the study will be offered to each patient when they will come to the centre (by oncologist, radiotherapist, surgeon, ...). For the health staff, the information can be delivered through different channels (posting, mail, mail, intranet...). This will make the informed consent available to all staff. Participation will be voluntary: staff who have read the information note and wish to participate in the study will have to register on the "PAPESCO-01" screening schedule, during which they will sign their consent with the occupational physician (or anyone delegated by occupational medicine), then have their first sample and complete the various questionnaires.
The screening of the patients and of the health staff will be done by 2 or 3 techniques depending of the results. The first technic is a blood test done at M0 (inclusion), M3, M6, M9 and M12 and on demand in case of Covid-19 symptoms (rapid serology (immediate analysis), ELISA serology (differed analysis on frozen sample), genotyping of FCGR2A and FCGR3A gens (only at M0)). The second technic nasal swab test (RT-PCR) is done only in case of symptoms (whatever the result of the minute test is) for the hospitalized patients. The results of the tests realised in town will be get back through the questionnaires. The third technic is the questionnaires to the patients and the health staff.