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A comment on Coronavirus clue? Most cases aboard U.S. aircraft carrier are symptom-free. Parent comment

Re:Coronavirus clue? Most cases aboard U.S. aircraft carrier... by perl4ever on Thursday April 16, 2020 @05:22PM (#22893708)
Possibly dumb question, how do we know someone with antibodies was exposed? The whole idea of vaccination is based on multiple things producing the same antibodies, so isn't it plausible there could be related viruses or genetic factors or something that would lead to antibodies for some people that hadn't been exposed?
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Re:Coronavirus clue? Most cases aboard U.S. aircraft carrier... by Barrin92 on Thursday April 16, 2020 @08:49PM (#22895167)
Yes, there is the chance of false positives with antibody tests, in particular for other strains of Corona, but scientists can do a sample of antibody tests on people they know to have been infected with covid-19 and get a rate for false positives and take that into account.
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