Dr. Yoel Jakobovitz (pardon spelling, the chief rabbi’s son) of Baltimore wrote an article in WhereWhatWhen suggesting that people who feel it necessary to get the vaccine wait till the first wave of shots passes so they can see what kind of reactions are being reported.
From what I’ve heard, this is prepared the same way as the standard flu shot so there shouldn’t be concerns of the reactions of 30odd years ago. Though I’m not a hundred percent sure the adjuvants aren’t an issue.
Almost moot. I’d like to get it for a high risk family member but you have to be on high alert for when a new (not Shabbos) clinic is available and be willing to give up the day for it.