As travelers prepare for their next vacation, among the essentials to take along — like a toothbrush, wallet and phone charger — could be proof of vaccination for Covid-19, depending on where they are booked to sleep.

As coronavirus cases surge again across the country, driven by the highly contagious Delta variant, a small number of hotels in the United States have announced that they will require proof of vaccination from guests and staff.

Accommodations such as PUBLIC Hotel, Equinox Hotel and Wythe Hotel, all in New York City, Urban Cowboy Lodge in Big Indian, N.Y., a hamlet in the Catskill Mountains, and Pilgrim House in Provincetown, Mass., are among the first in the United States to announce that they will require evidence of vaccination, via a physical card or a digital verification, from their guests.

The precedent for hotels requiring vaccination is already being set beyond the