Inclusion Criteria:  Participant is willing to sign verbal informed consent form. Age ≥12 and parents or legal guardians must consent as required by law. Participant is attending COVID-19 testing centre to provide a nasopharyngeal swab sample. Participant is willing to provide a self-collected saliva sample.  Exclusion Criteria:  Participant has previously tested positive for COVID-19 within the past 90 days.