This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Viral Diseases in Children, Subject name: Pediatrics
True about measles are all EXCEPT? 
Select and explain. 
A. Koplik spots appear in prodromal stage, B. Fever stops after the onset of rash, C. Vaccine given at 9 months, D. It is not infective before the rash appears
D: It is not infective before the rash appears
Answer: D: It is not infective before the rash appears 
Explanation: Measles: Koplik spots appear in prodromal stage Symptoms subside after appearance of rash Vaccine given at 9 months Patient is infective 4 days before & 5 days after appearance of rash NELSON: Symptoms increase in intensity for 2-4 days until the 1st day of the rash.