Process flow chart for Maricopa County Department of Public Health (MCDPH) COVID-19 automated case notification, prioritization, and assignment to Arizona State University (ASU) partner investigators. Cases meeting high-risk criteria included being aged <18 years or ≥65 years, residing in a known congregate setting (eg, long-term care, correctional facility), working in a high-risk setting (eg, health care, correctional facility), being hospitalized for COVID-19, dying within 14 days of the case being reported to MCDPH, or being associated with an ongoing outbreak.