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
Most common cause of epidemic of infective hepatitis is - 
Select and explain. 
A. HAV, B. HBV, C. HCV, D. HEV
D: HEV
Answer: D: HEV 
Explanation: <p> HEV causes large epidemics in Asia and Noh America. Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:220. <\p>