I am 70 and got covid in March, 2023 followed by 8 months of long covid (PEM and cardiovascular) that gradually dwindled. I got the Moderna vaccine that October with the usual minor flu-like side effects. The LC ended after this; don't know if the vaccine distracted my wonky autoimmune system or just luck. I always get vaccines and boosters. I've known too many people that died from covid, and two younger very active friends that died from cardiovascular events soon after covid (also a risk). mRNA vaccines don't 100% immunize, they deputize your immune system to go after viruses, thereby decreasing the severity and perhaps preventing infection and spreading.