Originally Posted by Pacnorthcuda
Originally Posted by 360view
Vienna Austria researchers announce that
40% of Covid-19 recovered patients have no antibodies in their blood afterwards.

https://medicalxpress.com/news/2020-08-covid-patients-antibodies.html


Which raises the question: Has anybody caught it twice???


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If so; did they then have anitbodies. Then it would seem this virus would have to make "2 Full Rounds" thru the entire population before it really subsides to any level close to the pre-covid time frame. Isn't that Law of Diminishing Returns? You only immunize a small % of population during each cycle.