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: Pediatrics
Koplik's spots are seen in: September 2008 
Select and explain. 
A. Typhoid, B. Measles, C. Mumps, D. Polio
B: Measles
Answer: B: Measles 
Explanation: Ans. B: Measles Koplik's spots are classically described as being bright red spots with white or bluish-white centers that may resemble grains of sand. They may occur anywhere in the mouth, often precede the generalized exanthem, and are pathognomonic for rubeola (measles).