Hi. I'm 76, just diagnosed last Dec and on mycophenolate. I have already received my 3rd (booster) covid shot, and had a mild reaction for 1 day. I had zero reaction to the first and second moderna jabs, so not sure why a reaction to the 3rd, but I think it's better to vaccinate even if it helps only moderately. I say this after 30 years in Communicable Disease Prevention and Control.