I think its worth pointing out that needing a vaccine is different than getting and benefiting from a vaccine.

Seasonal Flu and Covid vaccines are still beneficial, so while you don’t need any, if there is a way to beat the phobia, you can still benefit.

It’s not likely that anyone is going to offer you something like Xanax for a yearly flu shot, but maybe your Dr would knowing your circumstances, and that could be a slow process to maybe beating it by getting some successful years behind you using that method?