What should be done if there is a break in the cold chain?

• A. Separate the affected supply, label it 'DO NOT USE', and move vaccines to an alternative location.
• B. Notify supplier but continue use.
• C. Continue using if not obviously spoiled.
• D. Discard all vaccines in the entire facility.

Answer: (A)

When a break in the cold chain occurs, the priority is to protect patient safety by avoiding the use of potentially compromised vaccines. The best course is to quarantine the affected stock, clearly label it DO NOT USE, and relocate it to a secure, isolated location for evaluation or return to the supplier. This prevents any chance of accidental administration while you verify potency and follow established procedures. Document the event, review temperature logs, and inform the supervisor and supplier as required. Only after proper guidance should disposal or repackaging occur. This approach limits risk to patients and preserves the integrity of the remaining vaccines.