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
Period of cornmunicability of measles is- 
Select and explain. 
A. 3 days before and 10 days after appearance of rashes, B. 3 weeks after appearance of rashes, C. I week before appearance of rashes, D. 4 days before and 5 days after appearance of rashes
D: 4 days before and 5 days after appearance of rashes
Answer: D: 4 days before and 5 days after appearance of rashes 
Explanation: Ans. is 'd' i.e., 4 days before and 5 days after appearance of rashes t Ref: Park 24th/e p. 157; Community Medicine with Recent by Suryakantha 4th/e p. 328]Chicken pox : 1 - 2 days before to 4 - 5 days after appearance of rash.Measles : 4 days before to 5 days after appearance of rash.Rubella : 7 days before symptoms to 7 days after appearance of rash.Mumps : 4 - 6 days before symptoms to 7 days thereafter.Influenza : 1 - 2 days before to 1 - 2 days after onset of symptoms.Diphtheria : 14 - 28 days from disease onset.Peussis : 7 days after exposure to 3 weeks after paroxysmal stage.