Probably from wearing the masks, if you ask me.  Breathing in their own recycled germy air couldn't have been good for anyone.  Not to mention the fact that most of the masks people were sporting did absolutely  NO GOOD anyway.  The only people they were fooling were themselves.  A few of us never ever bought into that whole dumbass scenario.

https://www.technocracy.news/shock-most-hospitalized-covid-patients-developed-neurological-disorders/https://www.technocracy.news/shock-most-hospitalized-covid-patients-developed-neurological-disorders/

And now the tenor changes!  See below:

https://www.technocracy.news/cdc-study-overwhelming-majority-of-covid-patients-wore-masks/

Old news. Would you believe the CDC can't make up it's mind which scenario it wants to support.  Imagine that.