You ask an interesting question .
I went in for a SARS Covid-19 Antibody Test back in August. As I had been working with the Chinese for 3 years up until March 1st of this year.
Long story short. I had been doing some odd jobs at my Fathers in Mid May for a few days in a row (Power Washing), and then having KFC for dinner with them.
A week later my Stepmom asked I have the test, as they where in their 80s, and we had been in close proximity.
After asking my physician to fax a request to Quest Diagnostic for the test I was told even if I tested positive, or negative didn’t mean I couldn’t get it again. I guess it’s kinda like the flu.
” I was told even if I tested positive, or negative didn’t mean I couldn’t get it again. I guess it’s kinda like the flu.”
If your doctor said that then he was saying there is no reason to ever get a flu shot.
You either misunderstood him or else he is a quack.