Vaccine Types and Cold Chain MCQ — NEET PG Practice Question | NEETPGAI
Vaccine Types and Cold Chain
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A 6-month-old male infant from rural Maharashtra presents to the immunisation clinic for routine vaccination. The health worker notes that the oral polio vaccine (OPV) vial has been stored in the refrigerator for 4 weeks at 2–8°C. The vial was opened 3 weeks ago and has been used for multiple children. The mother asks if the vaccine is still safe to use. What is the most appropriate action regarding this OPV vial?
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