Jenner has a lot to answer for
apparently the Museum is in dire straights due to no visitors this year
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. Even then there were people who were afraid of quackery, which it must have seemed to them.
We had several children in school with polio [1955]. Whooping cough was the other killer, I stayed with 4 kids with that, the baby of 5 months literally shook from head to toe with each spasm. I vaguely remember chicken pox due to the calamine lotion which itched: and measles, felt OK until I looked in the mirror - then I felt really ill. We had parties in those days so that 'it' went round everyone.
What stands out is that some countries still suffer the above diseases. Smallpox is all but eradicated so if C-19 can be taken under control B4 it mutates too much, it will help World Wide.
Don't feel guilty about waiting. It's a personal decision which may improve as we learn more about how effective it might be etc..