That should be a warning to us today concerning allowing folks from other countries into America. Did people coming in get any diseases from the Indians?? Are we saying the Indians had no diseases at all???
Syphilus.
Just the clap.
The Americas were lacking in large domesticable beasts.
According to Jared Diamond (Guns, Germs and Steel, 1997), since the europeans domesticated and lived with horses, pigs, sheep, chickens, geese, ducks, ox and cows they traded zoonotic diseases back and forth, and the survivors had genes to resist any number of diseases.
By the time settlers arrived in what would become America, something like 90% of the people here were already dead.
Dead of the diseases that to europeans were minor annoyances.
'If this is small pox, what must the great pox be like?' an Aztec is said to have wondered...
“Are we saying the Indians had no diseases at all???”
syphilis?