COVID-19 vaccines should be mandatory--when the vaccine is available for all. It will be mandatory for jobs, travel, school, admission to public buildings and spaces, etc. Exceptions can be made for those who have legitimate medical reasons (as determined by a licensed MD or DO) for not taking the vaccine. Selfish persons who rely on the herd immunity from others being vaccinated will be out of luck. We live in the 21st Century folks, act like it.