now CDC has a preliminary answer to a question I was curious about: can you use antibody test to see whether vaccine worked for you. Their answer seems to be similar to their original position that we need no masks – No, because we did not certify tests to measure vaccine effectiveness; not all tests measure vaccine effect; and that tests are not perfect and you may make a mistake thinking that you are too protected or that you are not … This seems to me to mean – YES, it gives yu meaningful info, just need to make sure antibody test is the right one (that includes the part of the virus that vaccine used) and that you don’t over-rely on the result. So, a guess, if someone would get 3 times a negative antibody test, he should continue masking, and someone who gets a couple of positive tests can be more than 95% assured that he is immune. So, we should be able to separate between those who did or did not get immune.
[this is not a medical advice, just statistical analysis]
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