This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunization, Subject name: Pediatrics
In measles outbreak, measles vaccine can be given within: 
Select and explain. 
A. 2-3 months, B. 3-5 months, C. 2-7 months, D. 6-9 months
D: 6-9 months
Answer: D: 6-9 months 
Explanation: d. 6-9 months(Ref: IAP 224, Nelson's 20/e p 1381, Ghai 8/e p 193-194)In case of an outbreak, the measles vaccine can be given to infants as young as 6 completed months of age.