This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Walter Reed is associated with which disease? 
Select and explain. 
A. Typhoid, B. Plague, C. Yellow Fever, D. Malaria
C: Yellow Fever
Answer: C: Yellow Fever 
Explanation: Major Walter Reed was an U.S. Army physician led the team in 1900 that postulated and confirmed the theory that yellow fever is transmitted by Aedes mosquito species. Ref: Park, 21st Edition, Page 6.