"outsmart" is an anthromorphic term - no smarts in a virus. The suckers just keep mutating because their copy mechanism is buggy. If we imaging a virus that

"outsmart" is an anthromorphic term - no smarts in a virus. The suckers just keep mutating because their copy mechanism is buggy. If we imaging a virus that isn't as effective but isn't affected by the antibody injection, it will profit from the more effective viruses being cleared. Normally, it would be totally outcompeted, now it's the last virus standing.