My daughter is missing part of her immune system and didn’t get vaccine right away because she didn’t think her body would build up antibodies. She did get Moderna in April and then tested for antibodies. She had antibodies. She had no problem with the vaccine. I got a Moderna booster in August. I had moderately severe skin rash in two places. Never heard it could cause skin until I googled it. I had a shingles like rash on rib area and a chicken pox rash on my chest. I still get an occasional pox on upper chest.