Evidence-based prevention strategies can reduce the transmission of SARS-CoV-2, the virus that causes COVID-19. Consistent and correct use of masks can prevent SARS-CoV-2 transmission, which predominantly occurs through inhalation and other exposure to respiratory droplets from infected persons. Mask use is particularly important because presymptomatic and asymptomatic spread is responsible for nearly 60% of COVID-19 cases.1,2 Universal and proper masking results in substantial community benefits.2 To better leverage the prevention benefit of masks on community transmission, many states require that people wear a mask in public. As of March 1, 2021, 36 states and the District of Columbia had a mask mandate in effect.