Only some localized itching for about a week following Moderna shot #1 on February 14th. It’s still a little bit irritated, but nothing to cause concern. I’ve never logged much of a reaction to anything from childhood polio vaccine onward through annual flu shots to shingles shots and pneumonia vaccine, so I didn’t expect any trouble, but I was on the alert anyway because this is an unknown. Nothing else registered. One thing I did do right away and frequently for the next few days was gentle curls with a two-pound weight. My thought was that movement and flexing of the muscles of my left arm would help to distribute the vaccine and reduce any effects in the vicinity. Of course I don’t know if that helped, but it probably couldn’t have hurt.