I had the xbb vaccine in Oct 2023, got Covid June 2024 and got myocarditis the afib with a sad heart in July. I got the JN 1 Novavax in late Sept 2024. In 2 weeks my 6 min walk distance improved by 60%, my left atrial enlargement improved and I felt tons better. I had a major Covid exposure in Dec 2024. I didn’t test positive but I had a setback, lots of a fib and decreased exercise tolerance. I got a second Novavax JN 1 in March 2025. I had no adverse rxns but it didn’t seem to have much impact. A study came out this week on the impact of vaccine on LC people who hadn’t been vaccinated. Mostly positive, but it wasn’t too many patients and a few did worse. I can look it up if you want.