Community Medicine (PSM) · Immunization and Vaccines (Cold Chain, NIS Schedule, Open Vial Policy)

In a district vaccine store, which items are kept in the deep freezer maintained at minus 15 to minus 25 degrees Celsius?

  • A OPV vials and ice packs being frozen
  • B All EPI vaccines including DPT and hepatitis B
  • C BCG and measles vaccines only
  • D Diluents and syringes
Correct answer: A. OPV vials and ice packs being frozen

Explanation

The deep freezer at district level is meant for freezing ice packs and for storing OPV, the most heat-labile vaccine. Freeze-sensitive adsorbed vaccines such as DPT, pentavalent, hepatitis B, TT and PCV must never enter the freezer. BCG and measles vaccines are kept in the ILR compartment at 2 to 8 degrees Celsius. Diluents are always stored at 2 to 8 degrees Celsius, never frozen.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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