1. That's when the British army surgeon Ronald Ross discovered that it was mosquitos that carried malaria, not bad air or miasmas, as was previously thought.

2. Benjamin Rush, the Allopath [2] Benjamin Rush (1745-1813) was a member of the Continental Congress, a signer of the Declaration of Independence, a combater of yellow fever, the founder of psychiatry in America, and an obstinate believer in miasmas and bloodletting