What is the recommended action for a vaccine that is not usable after a cold chain interruption?

• A. Discard the vaccine.
• B. Return to the manufacturer for potential reimbursement.
• C. Keep for future use if conditions appear acceptable.
• D. Re-expose to cold conditions

Answer: (A)

Potency of vaccines depends on a strict cold chain; when temperatures stray outside the required range, you can’t be sure the vaccine remains effective. There’s no reliable way to confirm potency after a cold chain interruption, so the safe choice is to discard the affected vaccine rather than risk giving an ineffective dose. Keeping it for future use or attempting to restore usability by re-exposing to cold conditions could expose patients to a product that may not protect them or could cause harm. Follow your facility’s disposal and reporting procedures for vaccine waste and document the incident.