A health worker administers measles-rubella (MR) vaccine to a child. Which of the following is the correct storage temperature for MR vaccine at the primary health centre level?
- A +2°C to +8°C
- B -20°C to -15°C ✓
- C 0°C to +4°C
- D +8°C to +12°C
Correct answer: B. -20°C to -15°C
Explanation
Live viral vaccines such as measles, MMR, MR, and OPV must be stored at -20°C to -15°C at district and sub-district cold chain points (deep freezers), protecting them from degradation. At the PHC/subcentre level, they are stored in ice-lined refrigerators at +2°C to +8°C for short periods only. The critical point is that these freeze-sensitive vaccines must never be stored with ice in contact to avoid inadvertent freezing at the last mile.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.