Hi everyone,
I had the first dose of the Moderna vaccine 11 days ago.
In the first 24 to 48 hours, the side effect was pain and stiffness in the shoulder who had the shot. Not much, just a problem if I wanted to raise my arm above shoulder height.
But the main side effect started around 24hrs after the shot. For 4 days, I had significant fatigue and exercise intolerance. I could feel it when climbing stairs, and I was lacking the energy to do what I needed to do. It was not as severe as a full-blown POIS attack, back when I had not developed my pre-pack yet. It was like having a cold, but with no sore throat, no running nose, and no fever - just the toll on energy taken from the ongoing production of antibodies by my immune system.
In the first 3 days of this fatigue, I was at about 60% of my usual energy. I would have prefered lying on the couch rather than going to the grocery store. On the 4th day, fatigued lifted a bit, I had 75% of my usual energy. The day after I was back to normal.
Considering most people have only slight pain in the shoulder and arm, I think I can say that I had more side effects than average. No surprise, I guess, if we consider that the immune system does not seem to have optimal functioning.