AdvertisementNYC Becomes Largest U.S. City To Require Proof Of Vaccination For Indoor ActivitiesUpdated August 03, 2021Joe HernandezfacebookEmailMasked kitchen workers pass plates of food to a server at Claro restaurant in February in New York City. Starting next month, those plates will go only to indoor diners who can prove they have been vaccinated. (Getty Images)This article was originally published on August 03, 2021.