This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
Vaccine(s) not to be frozen is/ are 
Select and explain. 
A. BCG, B. OPV, C. DPT, D. Measles
C: DPT
Answer: C: DPT 
Explanation: DPT vaccine should not be frozen. They should be stored in a refrigerator between 2 to 8 deg. The vaccine should be used before expiry indicated on the l (refer pgno:162 park 23 rd edition)