Inclusion Criteria:  Individuals age ≥ 18 years of any gender tested positive for SARS-CoV-2 by a molecular reference test (PCR test or antigen test) [INDEX PATIENTS] Individuals age ≥ 18 years and known to be contacts of the index patients [CONTACTS]  Exclusion Criteria:  < age 18 years old, unable to wear a face mask due to underlying condition, not able to consent, pregnancy. In addition, signs of severe disease present at time of enrollment (e.g. difficulty breathing, pain when breathing, tightness of chest or developing irregular heart beat).