Unless we know for sure, why stir up the pot especially with speculation.
A few weeks ago I got an email from an acquaintance that was in perfect health, and young, from Marin General hospital.
They put him on a ventaliator because of Covid.
He is out now, but will be on blood thinners for 6 months. He had blood clots in his lungs. 23, and an exercise nut.
Every member of his family were anti-vax, until they saw him through the glass.
They all have the first shot of Pfizer.