FDA Director Jerry Weir Says It Is 'Unknown' How the COVID Vaccines are Affecting T-Cell Memory

"I don't even think we know whether the T-Cell response is a CD4 T-cell response, a CD8 response...I'm just saying there's a lot that's unknown." pic.twitter.com/4M4XW7x95e

— Chief Nerd (@TheChiefNerd) January 26, 2023