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 true regarding Japanese encephalitis except ? 
Select and explain. 
A. Caused by flavivirus, B. Herons are reservoir host, C. Transmitted by culex, D. Cattels are amplifier hosts
D: Cattels are amplifier hosts
Answer: D: Cattels are amplifier hosts 
Explanation: Ans. is 'd' i.e., Cattles are amplifier hosts Japanese encephalitis Caused by a group B arbovirus (flavivirus) It is a Zoonotic disease ie infecting mainly animals and incidentally man. In south, epidemics have occured in Karnataka, Andhra predesh, TamilNadu, and Kerala.