Under the Open Vial Policy of India's UIP, an opened multi-dose vial of DPT vaccine can be reused at subsequent sessions for a maximum of how many days after opening, provided cold chain and aseptic conditions are maintained?
- A 7 days
- B 14 days
- C 28 days ✓
- D 48 hours
Correct answer: C. 28 days
Explanation
Under the revised Open Vial Policy (2015) in India's UIP, opened multi-dose vials of DPT, TT, HepB, Pentavalent, OPV, IPV, and PCV can be reused for up to 28 days after opening, provided the cold chain is maintained, the VVM has not reached the discard point, and aseptic technique is followed. BCG, MR, and Rotavirus vaccines are excluded.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
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