Inclusion Criteria:  Adults 18 years of age or older Living within the contiguous 48 states Groups 1 and 3: self-reported HIV infection Groups 2 and 4: self-reported HIV negative  Exclusion Criteria:  Inability to communicate by telephone in English or Spanish Inability to complete required study events A first or only diagnosis of COVID-19 5 or more months prior to first contact with participant Groups 3 and 4: diagnosis of cOVID-19 ever, or participant suspects they had COVID-19 at any time regardless of whether they were tested