Circles and dotted line: Circles represent observed weekly number of persons, and the dotted line connects consecutive weeks. Blue solid line and band: Predicted number of persons and 95% confidence interval assuming the absence of the COVID-19 pandemic. Federal holidays with large decreases in antiretroviral prescriptions include New Year’s day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. These holidays were included as dummy variables in the model. We did not include other federal holidays as dummy variables in the model because large decreases in antiretroviral prescriptions were not observed. ARV, active antiretroviral; COVID-19, coronavirus disease 2019.