The main objective is to expand screening for severe acute respiratory syndromecoronavirus 2 (SARS-CoV-2) by evaluating the diagnostic accuracy of the RT-PCR test(Cobas® Roche, Switzerland) and the ELISA Point of Contact Testing (PORTABLE COVID-19ANTIGEN LAB® Stark, Italy) on buccal swab compared to the reference test, the RT-PCR test(Cobas® Roche, Switzerland) on nasopharyngeal swab.Secondary objectives - To evaluate the diagnostic accuracy of oral swab RT-PCR and POCT relative to the quantitative amplification (Ct) values of the NP Swab RT-PCR assay. - Analyze RT-PCR amplification cycle thresholds (Ct) and POCT diagnostic accuracy as a function of the presence and timing of symptoms. - Among symptomatic participants, compare clinical presentations between positive and negative participants on the NP swab RT-PCR test. - The RT-PCR test may be imperfectly sensitive, ranging from 71 to 98%3. Using a Bayesian latent class model, the investigators will assess the true accuracy of POCT as it does not require the assumption that any one test or combination of tests is perfect14,15.