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
JE virus life cycle in nature run between? 
Select and explain. 
A. Pigs-Mosquito, B. Cattle-Birds, C. Pigs-Human, D. Birds-Pigs
A: Pigs-Mosquito
Answer: A: Pigs-Mosquito 
Explanation: -Japanese encephalitis virus infect several extra human host, animals and birds. - The basic cycles of transmission are from pig to mosquito. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:285 <\p>