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
All are caused by common vectors, except 
Select and explain. 
A. Dengue fever, B. Yellow fever, C. KED, D. Japanese encephalitis
C: KED
Answer: C: KED 
Explanation: Ans. is 'c' i.e., KFD o KFD is transmitted by hard tick where as all else are transmitted by mosquitoes.