Interesting. It might explain why I've had few friends here in the DC area with no reactions. That said, one very healthy friend was hospitalized for pneumonia/COVID days after his 2nd shot. Another friend, 60 healthy no underlying conditions/comorbidities, basically passed out, turned green-grey and pissed on himself right in front of us at dinner. I was on the phone w/ 911 and seconds away from starting CPR when he took a breath. 2 days in the hospital with zero results. He had a latent, treated heart electrical condition which suddenly reappeared after 20 years. Wife's friend's mom developed bells palsy/stroke symptoms. OK, maybe more than a few...