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
Carries are impoant in all the following except ? 
Select and explain. 
A. Polio, B. Typhoid, C. Measles, D. Diphtheria
C: Measles
Answer: C: Measles 
Explanation: Ans. is 'c' i.e., Measles o Though incubatory carrier state occurs in measles, it is not so impoant. "The only source of infection is a case of measles. Carriers are not known to occur". - Park o In all other three disease, carrier state is impoant in transmission of infection.