3 ms·

Totally. Happened with HIV right?

• abacadaba 7y ago
  Yes... in monkeys. Just need to give it a few million years or so.
  • WalterBright 7y ago
    Note that smallpox was much less deadly to Europeans than Native Americans.
    • soperj 7y ago
      Because people got variations of the disease (like cowpox)
      • bluGill 7y ago
        More likely because selective pressure in Europe over the years meant that those who had any even partial immunity survived and passed that on, while in north America that pressure was missing.
        • soperj 7y ago
          Why is that more likely?
          • bluGill 7y ago
            Small pox either was around, or something like it that jumped to humans