evidence: COVID-19 and other respiratory viruses continue to circulate, and we know that wearing well-fitted masks helps to decrease the transmission of all kinds of respiratory illnesses. In general, people should consider wearing a well-fitting, high-quality mask, such as a KF94, KN95 or N95, in crowded or poorly ventilated indoor settings, especially if they are at higher risk for severe disease or when the prevalence of respiratory diseases such as COVID-19 or influenza is high or increasing. In any setting, people can always choose to wear masks around others for added protection, and everyone should respect others’ choices around their health. [...] No. Masks are no longer required on public transportation. Individuals are encouraged to consider masking based on location, crowd, and personal risk factors, especially when an individual or the people they live with are vulnerable to the worst outcomes of COVID-19. This includes on public transportation, while waiting for public transportation indoors, and when driving or riding in a taxi or rideshare vehicle.