I took the Moderna booster. In my case, I had fatigue and cramps within 24 hours (not as bad as the 2nd dose, but felt worse than the 1st dose). Clearly, my im

I took the Moderna booster. In my case, I had fatigue and cramps within 24 hours (not as bad as the 2nd dose, but felt worse than the 1st dose). Clearly, my immune system was responding immediately. The stats say I'm not fully protected until 2-weeks later. But I know for a fact that my body was reacting within a day.