https://t.co/gUUnkToA3v
— Prof. Shane Crotty (@profshanecrotty) September 29, 2020
"The assumption that T-cells primed by common colds offer protection against SARS-CoV-2 is “completely speculative,” said Dr. Crotty... “It’s possible they help. It’s possible they don’t do anything. And it’s possible they are harmful.”