Antibody tests are effective in detecting antibodies. So will not detect those in the early stages of infection before the adaptive immune response has been launched. However, antibody tests will det… (View Post)

The biggest problem with the PCR tests is that they are so sensitive that they will pick up small RNA fragments, which are non-infectious, as positives. So for PCR tests, at least, it is the false po… (View Post)

So, let's run the numbers. Sensitivity when conducted by self-trained persons = 58% Specificity = 99.68% If prevalence is 10% among those seeking the test (i.e. the previously undiagnosed), of 1… (View Post)

That is true in general, but evolution tends to walk more like a drunken spider than in a straight line. I think the Telegraph's argument is pretty much nonsense, because: (1) it implies first t… (View Post)

New study on mask-wearing and COVID. Synopsis, masks work very well, but not perfectly, so we need both mask-wearing and social distancing: https://scitechdaily.com/new-testing-shows-masks-not-enough… (View Post)