The cold chain temperature requirement for BCG vaccine storage at the primary health centre level is:

• A -15°C to -25°C ✓
• B +2°C to +8°C
• C 0°C to +4°C
• D +8°C to +15°C

Explanation

BCG vaccine is highly sensitive to heat and light; it must be stored at -15°C to -25°C (freezer temperature) to maintain potency. After reconstitution, BCG must be used within 4 hours. The cold chain for vaccines in India uses a hierarchical system from national cold stores to district stores to PHC, where freezers maintain temperatures between -15°C and -25°C for heat-sensitive vaccines like BCG, measles, and polio (OPV).

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

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Written and medically reviewed by the StethoPrep medical team.