Rochester adjusts mask protocols for city facilities Most city buildings won't require masks, but use is encouraged for those who have not been fully vaccinated. 5:20 pm, May 26, 2021 × The City of Rochester is adjusting its COVID-19 safety protocols. Starting Tuesday, masks will no longer be required inside city-operated facilities, with some exceptions. Masks will continue to be required without exception by all in the Rochester Public Library’s Youth Services Area and in some Parks and Recreation youth programs, since children younger than 12 are unable to receive vaccinations. Masks are also still required on Rochester Public Transit buses and in or around transit facilities, including stops and shelters. Additionally, occupancy on city buses will remain at 50 percent.