I'm not sure about that one. As a species we need to stay in groups and take care of our sick. We traveled vast distances by foot and sought out our own kind.

I'm not sure about that one. As a species we need to stay in groups and take care of our sick. We traveled vast distances by foot and sought out our own kind. To equivocate, I did hear about ancient ruins of villages in China where unknown strains of plague were unearthed, before this COVID-19 stuff. I assume these then became cursed villages that no one visited.