“There are not 2, but at least EIGHT strains now. “
I have to wonder if you catch one strain if it would help you to fight off the others.
“I have to wonder if you catch one strain if it would help you to fight off the others.”
It depends.
All these reported strains are very similar, supposedly, so they might not even really be different strains, but rather minor variants. If the mutations are not related to the infection mechanism or to how your immune system “sees” the virus, immunity should be cross-strain. After that, there is a spectrum of partial immunity, or worst case no immunity, but that all depends on the nature of the variations.
Suppose you have a cat and it mutates and grows a pink hairless rat tail instead of the normal one. You will still see it as a cat. Suppose it grew a second tail. It’s still kind of a cat. Suppose instead that it mutates and turns into a wolf. Now you don’t see a cat anymore. That’s pretty much the difference between strains/variants as far as your immune system is concerned.
Doubtful.
Probably. Coronaviruses are quite stable.