This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Japanese encephalitis is caused by - 
Select and explain. 
A. Culex, B. Flavi virus, C. Pigs, D. None
B: Flavi virus
Answer: B: Flavi virus 
Explanation: Japanese encephalitis is a mosquito borne disease caused by group B arbovirus ie Flavivirus and transmitted by culcine mosquitoes.Pig is the major veebral host of JE virus Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no.302