The Natives definitely got the Europeans back with the super syphilis that we sent back across the Atlantic.

Syphilis was mild and manageable, akin to something like herpes today. We didn't have tolerances built up for the strain from North America.

That's why French people plastered their faces white and wore giant powdered wigs. They were all rotting from the top of their heads to middle of their shins.

Was so bad they would intentionally contract malaria, hoping the fever would kill the syphilis before it killed them.