Assuming it went out of control, it's not unreasonable to assume that the antidote can become ineffective, and even if it was effetive, it'd have the same probl

Assuming it went out of control, it's not unreasonable to assume that the antidote can become ineffective, and even if it was effetive, it'd have the same problems as current vaccines (distribution chain, antivaxxers, testing and getting it approved for use in humans), but with even more difficult ethical implications. I'm not sure if there is a widely used term is used for this (countervirus comes to mind, but that seems used for something else), since it is an unacceptable practice so far.