Unless of course they can get an exemption, and antivaxers are absolutely not afraid to shop for an exemption that fits their needs.
I applied to a desk job at a hospital in 2022 and in the initial call to interview the lady said to me "now we are required by the federal government to have all employees be fully vaccinated against COVID" and before I could even react or say anything she added "but don't worry there's a ton of exemptions for that! Would you like to talk about the exemptions?" To which I just said "I'm already fully vaccinated, so that won't be necessary" and her reaction seemed to be genuine shock and surprise at that answer
We take our pets to the vet for their annual checkups (honestly, caring for them better than I do myself, at least in that respect - I'm terrible about seeing the doctor other than when something is wrong). One time, the vet (one we hadn't seen before) noted that one of the pets was due for one of his regular shots, like the rabies vaccine. She was kind of holding her breath until we responded, "Sure, go ahead and do that." We could see that she was concerned about what our reaction to that would be.
It has gone that far...people not even vaccinating their pets.