https://www.siliconvalley.com/2021/08/11/more-places-are-requiring-proof-of-covid-19-vaccination-is-a-vaccine-passport-coming-to-california/

Starting Wednesday, hospitals and nursing homes in California must verify that visitors are vaccinated or have tested negative for the coronavirus within the last three days — the Golden State’s latest COVID requirement amid a pandemic with no end in sight.

The shift could offer another indication of things to come as hospitals pivot from screening visitors for symptoms to checking vaccination cards and QR codes. With the delta variant surging across the state and employers from Facebook to the federal government now mandating workers get vaccinated, an increasing number of businesses from bars to concert halls are barring the unvaccinated.