“I don’t think you can become immune after contracting it,”
You can be immune even if you never had COVID-19. Immunity from other viruses can give people varying degrees of immunity to COVID-19.
There is more than one type of immunity, antibodies and T-cell immunities which act differently.
So your statement is incorrect.
Can you back that up with info? Not being facetious. That’s not what we are telling people. It can’t be your opinion but actual info. Thank you.