I had the original Pfizer Covid vaccines and never have had a booster. I'm not convinced about the boosters either. I have had vaccines for shingles and pneumonia (last year) due to recurrent pneumonias since 2020. Last one was a year ago. Praying never again. I had the flu in February (1st time in like forever) and have never had the flu shot. I'm not anti vax by no means but no pro taking every vaccine out there either. Will be reading more about them for sure.