I get that concern with Covid 19 is there’s no immunity to it, but wouldn’t creating the cure for it prevent immunity for it from developing?

Viruses, to my understanding, aren't so much "cured" as treated with therapies and vaccinated against.

theyre trying to make a vaccine for it so people dont have to get sick to get immunity. but it takes time. and it will take some testing on humans before we make it happen.