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
KFD is transmitted by: March 2010 
Select and explain. 
A. Tick, B. Sandfly, C. Mosquito, D. Mite
A: Tick
Answer: A: Tick 
Explanation: Ans. A: Tick Kyasanur forest disease is a tick-borne viral hemorrhagic fever endemic to South Asia. The disease is caused by a virus belonging to the family flaviviridae, which also includes yellow fever and dengue fever. There are a variety of animals thought to be reservoir hosts for the disease, including porcupines, rats, squirrels, mice and shrews. The vector for disease transmission is Haemaphysalis spinigera, a forest tick. Humans contract infection from the bite of nymphs of the tick. Estimated incubation period is between 3-8 days.