the antibody tests are relatively accurate
it is the virus test that is unreliable
according to my Ph.D Cancer Biology daughter
the roommate went to New York in March and got sick for 2 weeks, then came home to California.
the antibody test in May, was the first confirmation that she had Corona, it was neither diagnosed nor tested for in March.
you can take it to the bank, until you develop new data, that this sample of one, indicates corona antibodies are extinguished in 3 months…
and the fact the antibodies were detected, pretty much negates the line of reasoning that people are overcoming Corona, without having any antibodies afterwards…
Occams razor
the simplest answer is closest to the truth
you get sick, you get antibodies, when the antibodies are gone, you are no longer immune
some things make you sick and you get antibodies that last a lifetime, some last 3 months, and for some, you remain a carrier for life, such as herpes…
corona at least, seems to clear the body… not like herpes, but also does not produce permanent antibodies… like measles does… or a polio vaccine…
just my thoughts… not meaning to argue, just brainstorm