I mean, that's fine, but it's not what the parent was asking for. It seemed that they were implying we needed to catch every pre-infection, and the lack of deve

I mean, that's fine, but it's not what the parent was asking for. It seemed that they were implying we needed to catch every pre-infection, and the lack of development of highly sensitive tests for pre-infection was evidence of some negligence. I was arguing against developing "T-cell tests" for prior COVID infection. My comment was not intended to be an argument against any testing for pre-infection; I think the rationale for that is pretty solid, but I think that the regulatory establishment needs to be prepared to inform people that they might not be able to prove their previous infection and in that case they should get vaccinated.