A nurse reconstitutes measles and rubella vaccine during an immunisation session. What should be done with the unused reconstituted vaccine at the end of the session?
Correct answer: C. Discard it after six hours or at session end
- A. Keep it for use during the next session
- B. Return it to the refrigerator for later use
- C. Discard it after six hours or at session end
- D. Freeze it immediately for use within one week
Explanation
Reconstituted measles-containing vaccines are discarded after six hours or at the end of the session, whichever comes first. Returning them to the refrigerator does not make them safe for later use.
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About Immunisation and EPI
Immunisation covers active and passive immunity, vaccine types, routine childhood schedules under Pakistan’s Expanded Programme on Immunization, administration routes and age-based timing. It also includes cold-chain maintenance, contraindications, adverse events following immunisation, missed doses and the distinction between vaccine protection and treatment of an established infection.
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