I HAVE QUESTIONS: Rapid, at-home blood test could confirm COVID-19 vaccination in minutes. “One challenge as society reopens is identifying who has been vaccinated for SARS-CoV-2, the virus that causes COVID-19. A team of Johns Hopkins researchers has developed a rapid blood test that could confirm a person has been vaccinated while they wait to board a plane or enter a sporting event.”

First, does this reflect immunity in general, or only vaccine-produced spike protein antibodies? Second, how many businesses want to handle people’s blood. Third, how many people will submit to a blood test followed by a wait before entering a business? Fourth, do the relatively low risks posed by Covid justify this sort of thing?