A health worker plans a full-day outreach immunization session in a remote village. She will transport vaccines from the PHC in a standard vaccine carrier with four conditioned ice packs. For approximately how long does this arrangement maintain vaccines at 2 to 8 degrees Celsius?

• A About 2 to 3 hours
• B About 5 days
• C About 48 hours
• D About 12 hours ✓

Explanation

A standard vaccine carrier with four conditioned ice packs keeps vaccines within 2 to 8 degrees Celsius for roughly 12 hours, which suits a day-long outreach session with return the same evening. Two to three hours describes a day carrier, and five days at 2 to 8 degrees is the capacity of a cold box, which is used for larger inter-facility transfers, not a routine carrier.

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.