Inclusion Criteria:  Adults 18 and older; children and adolescents 10 years of age and older, at the time of signing the informed assent with parent or guardian consent Willing and able to provide informed consent/assent with parental consent Diagnosis of SARS-CoV-2 infection using a diagnostic test with a positive result, e.g., RT-PCR, antigen test, or other test format (approved or with Emergency Use Authorization issued by the US FDA or by local health authority) and within the eligibility period of the contact's prevention research study, or is currently being assessed for COVID-19 A close contact is being screened for enrollment or has enrolled in a SARS-CoV-2 prevention research study Access to a smart phone or device with internet access to complete a questionnaire or communicate with research study team  Exclusion Criteria:  Hospitalization (current) No household member enrolling/enrolled in a SARS-CoV-2 prevention research study