a lot of countries also don't have mandates. in regions where ebola is endemic, the vaccine isn't mandated, though perhaps it should be.
in the USA the flu vaccine is not mandated either, not even in hospitals.
further covid is not apples to apples with measles and smallpox. covid mutates. the vaccines don't achieve herd immunity. those diseases target the young while covid targets the old and infirm.
covid does not affect everyone equally.
zero-tolerance and one-size-fits-all was a mistake.