"On Thursday, his doctors announced [Damar] Hamlin had started to awaken. Though he remains critically ill and on a ventilator..."

"... his medical team said the player is showing signs of 'good neurologic recovery' and is making significant improvement.... In cardiac arrest, the heart is no longer pumping blood, which means no oxygen is traveling to the brain or other organs. Seconds matter: The longer a person goes without oxygen, the chances of organ damage increase, and the chances of survival decrease. CPR mimics a pumping heart, which keeps blood flowing.... In audio obtained by CNN... [a]t 8:55 p.m. ET, when Hamlin hit the ground, someone can be heard saying, 'Go over to the cot. I don’t like how he went down.' A few seconds later, another voice says, 'We’re going to need everybody. All call, all call.' Within the minute, several other cries go out for all personnel to rush to the field...."

CNN reports.

And there's this from Yahoo!sports (which sounds like the way you'd write the story in fiction):

Damar Hamlin, hit in a football game, goes into cardiac arrest, some people are bringing up the Covid-19 vaccine, and we are told those people are deplorable.

This is my screenshot of the top of what comes up when I search Twitter for Damar Hamlin and vaccine: