Everyone knows that one of the biggest factors in the genocide of Native Americans was disease. Are there instances of any outbreaks that wiped out white settlers?

Joaquim Xavier curado was born in 1746 in an aristocratic family in the province of Goiás. In 1822, he commanded troops loyal to Dom Pedro I in battle with the forces of General Jorge de Avilez in Rio de Janeiro. Organizing a troop of six thousand soldiers, he supported the Fico Day, and was therefore honored, at the hands of D. Pedro I, with the titles of baron with greatness and count of São João das Duas Barras, on October 20, 1825 and September 7, 1826. He was also governor of Santa Catarina (1800-1805) and one of the military leaders in the conquest of Uruguay (1816-1820). The count of São João das duas barras is considered to be the first Brazilian to attain high military posts in the Portuguese army and was even awarded the order of Sword and tower by D.João VI.

My nephew recently asked me if any Greeks fought in the American Revolution, as we are Greek and is doing an essay project about little known people in the US. I told him no, thinking then that no one had immigrated at that point to the US. But the question came back into my head the other night, so I looked up whether any had.

And, well, I found that a man named Michael Drakos was born in the 1730s in Athens, came to the US, and served with the Spanish, who called him Michel Dragon. The thing is, I can barely find any information about him. All I can find is a Wikipedia article and a FindAGrave entry. Like nothing about where he fought, what battles, nothing.

If anyone could find any good information about him (he's gonna need links for citations and such), that would be great.

Cheers.