This theory was put to the test a few years later during a massive yellow fever outbreak in New Orleans. Yellow fever ... they were in the 1700s or the 1800. It's still going to be 1 out of ...

4. Baltimore; Summer 1800; 1,200 dead As the 19th century wore on, yellow fever outbreaks would increasingly be confined to the southern United States. 5. New Orleans; Summer 1853; 8000 or more ...

Yellow fever killed more than 150,000 people in New Orleans between the Louisiana Purchase in 1803 and the Civil War, according to Olivarius. “Once you see it, every single source is covered ...