National Library of  Medicine
Dr. Walter Reed, National Library of Medicine

In 1900, Dr. Walter Reed and an intrepid group of his colleagues on the US Army Yellow Fever Commission studied yellow fever in Cuba. The commission put together the puzzle of how the yellow fever virus was spread, and identified the aedes aegyptii mosquito as the vector.  Mosquito control measures were put in place throughout the Southeast – and the last yellow fever outbreak in the US occurred in New Orleans in 1905.
University of Virginia. 1997. “Yellow Fever and the Reed Commission.” Internet website: www.med.virginia.edu.