Nice article on conditional probabilities, @drdrang@mastodon.cloud, especially this table (⬇︎) as well as on the effect of a second screening. Am I the only one missing the link to the CNN article?

                  Have      Don't have
               antibodies   antibodies
-------------------------------------------------
Test positive    4,500        4,750    |   9,250
Test negative      500       90,250    |  90,750
-------------------------------------------------
                 5,000       95,000    | 100,000