>Is that their only stated reason? FWIW I know quite a few medical doctors reluctant to take one or other of the vaccine options after researching carefully.
>

John, just to clarify, are you saying that you know some medical doctors who are reluctant to take "one" of the specific vaccines? (i.e. J&J, versus Pfizer/Moderna)

(That one, I can understand, if one of them specifically has a lower effective rate, higher rate of serious side-effects, etc.)