Masks still required at many central Pa. grocery stores, including Giant, Karns and Weis PennLive.com 15 mins ago Sue Gleiter, pennlive.com Popular Searches The new policy states fully vaccinated people do not have to wear masks in most places, including crowded outdoor events. However, the federal agency advised even those who are vaccinated to wear masks in crowded indoor settings like buses, planes, hospitals, prisons and homeless shelters. The guidance, which unions and industry groups say could put workers’ safety at risk, complicates rules for retailers, who have no way to determine whether employees and shoppers have been fully vaccinated. Masks have been a contentious issue throughout the pandemic.