> At least six studies have reported T cell reactivity against SARS-CoV-2 in 20% to 50% of people with no known exposure to the virus.5678910 I suppose if the

> At least six studies have reported T cell reactivity against SARS-CoV-2 in 20% to 50% of people with no known exposure to the virus.5678910 I suppose if the vaccine trial studies going on now return with anything more than half the infections of the control group (however they want to measure it), we'll have our answer.