This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant facts in Immunization, Newer Vaccines, Subject name: Social & Preventive Medicine
Efficacy of Measles vaccine after second dose:- 
Select and explain. 
A. 90%, B. 95%, C. 99%, D. 100%
C: 99%
Answer: C: 99% 
Explanation: Efficacy of Measles Vaccine:- >90% with 1 dose. >99% with 2 doses. (AMMRS Strategy)