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
Chemoprophylaxis is not indicated in which of the following - 
Select and explain. 
A. Measles, B. Cholera, C. Meningococcemia, D. Plague
A: Measles
Answer: A: Measles 
Explanation: Ans. is 'a' i.e., Measles