HUMAN VERSUS VIRUS. “We might like to think of ourselves as the most “highly evolved” species but, in terms of how many rounds of mutation and selection we’ve undergone, we are one of the least evolved species. Around 10 billion new viral particles can be produced every day in the body of a person infected with HIV. By contrast, the total human population on Earth was no more than a few million until a few thousand years ago.”
https://www.newscientist.com/article/dn13640-evolution-myths-evolution-produces-perfectly-adapted-creatures/