This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunization, Subject name: Pediatrics
Which of the following vaccines can result in Thrombocytopenia? 
Select and explain. 
A. MMR vaccine, B. Typhoid vaccine, C. Influenza vaccine, D. HIB vaccine
A: MMR vaccine
Answer: A: MMR vaccine 
Explanation: a. MMR vaccine(Ref: IAP 223, Ghai 8/e p 145)With Measles vaccine, Thrombocytopenic purpura may occur at a frequency of 1/30,000 vaccinees.One of the components of MMR is the Measles vaccine; So MMR vaccine can cause thrombocytopenia.