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 ...

A deadly outbreak of a disease which first emerged in the 17th century has led a South American ... recently upgraded the yellow fever risk for South America to 'level two' out of four.

Although 19th-century postal workers were in no danger of contracting yellow fever from perforating or fumigating the mail, that fact, known to us only in hindsight, does not detract from the ...