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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Vaccine which requires most stringent condition for storage-
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The correct answer is  .oral polio vaccine is highly sensitive to varying temperatures.the cold chain temperature for storage of OPV are, routine storage at 2 to 8 degrees long term storage at -20 to-40 degrees ref:park&;s textbook,ed 22,pg no 138