In cold chain management, the 'ice-lined refrigerator' (ILR) maintains vaccines at:
- A 2°C to 8°C ✓
- B -15°C to -25°C
- C 0°C to 4°C
- D 8°C to 12°C
Correct answer: A. 2°C to 8°C
Explanation
The ice-lined refrigerator (ILR) maintains an internal temperature of +2°C to +8°C and is the primary cold chain equipment at PHC and district level for storing most liquid vaccines. Freeze-dried vaccines can tolerate temperatures down to −20°C but must not be stored below 2°C as many liquid vaccines (Hepatitis B, DPT) are damaged by freezing.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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