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
True statement regarding Japanese Encephalitis is 
Select and explain. 
A. Epidemic is declared if there are 2-3 cases in a village, B. 70% of cases are reported from infants, C. Ratio of clinical apparent to non-apparent infections is 1:100, D. Mosquito bite is always associated with the disease
A: Epidemic is declared if there are 2-3 cases in a village
Answer: A: Epidemic is declared if there are 2-3 cases in a village 
Explanation: • 85% of cases of JE are reported in age below 15 years BUT JE IS INFREQUENT IN INFANCY: Vaccination not recommended below 6 months age infants (as also interference from maternal antibodies)
• Not all humans bitten by mosquitoes develop the disease: Ratio of JE overt disease to inapparent infection varies from 1:300 to 1:1000
• Endemicity of JE in India: 1-2 cases per village