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: Microbiology
JE virus life cycle in nature run between ? 
Select and explain. 
A. Pigs-Mosquito, B. Cattle-Birds, C. Pigs-human, D. Bird-Pigs
A: Pigs-Mosquito
Answer: A: Pigs-Mosquito 
Explanation: The natural cycles of JE vrirus are:-
a. Pig → Mosquito → Pig
b. Ardeid bird → Mosquito → Ardeid bird
Japanese encephalitis
Caused by a group B arbovirus (flavivirus)
 It is a Zoonotic disease i.e., infecting mainly animals and incidentally man.
In the south, epidemics have occurred in Karnataka, Andhra Pradesh. Tamil Nadu, and Kerala.
Vector → mosquito (Culex tritaeniorhynchus) that breeds in rice fields.
 Hosts
Pigs → Amplifiers
Cattle and buffalos → Mosquito attractants
Man → Incidental dead-end host
Herons → Reservoir hosts
Cycles
a. Pig → Mosquito → Pig
b. Ardeid bird → Mosquito → Ardeid bird
Incubation period → 5-35 days.