Cold Chain & Vaccine Storage MCQ Quiz | Immunization

Welcome, MBBS students! This quiz is designed to test your understanding of the critical principles of the Cold Chain and Vaccine Storage, a cornerstone of effective immunization programs. Proper management ensures vaccine potency from manufacturer to patient. This quiz covers key topics including ideal storage temperatures, the functionality of cold chain equipment like ILRs and deep freezers, interpretation of Vaccine Vial Monitors (VVM), the “Shake Test” for freeze-sensitive vaccines, and the Open Vial Policy. Challenge your knowledge with these 25 multiple-choice questions. After submitting your answers, you’ll see your score and a detailed review of the correct and incorrect responses. You can also download all questions with their correct answers in a PDF format for future reference and revision.

1. What is the ideal temperature range for storing most vaccines like DPT, TT, and Hepatitis B in an Ice-Lined Refrigerator (ILR)?

2. Which of the following vaccines is the MOST sensitive to heat?

3. Which of the following vaccines is MOST sensitive to freezing?

4. What is the primary purpose of the “Shake Test”?

5. A Vaccine Vial Monitor (VVM) on a vial of OPV shows the inner square is the same color as the outer circle. What is the correct action?

6. According to the “Open Vial Policy” under India’s Universal Immunization Programme, which opened vaccine vial can be used in subsequent sessions if stored correctly?

7. In an Ice-Lined Refrigerator (ILR), where should freeze-sensitive vaccines like DPT and TT be stored?

8. What is the function of a ‘Conditioned’ ice pack in a vaccine carrier?

9. How often should the temperature of a vaccine refrigerator be recorded?

10. The ‘cold life’ of a vaccine carrier refers to:

11. Which piece of equipment is used for long-term storage of OPV and Measles vaccines at the regional level?

12. If a VVM inner square is lighter than the outer circle, what does it indicate?

13. The “First Expired, First Out” (FEFO) principle is primarily used for:

14. What immediate action should be taken in case of a power failure affecting an ILR?

15. BCG vaccine, after reconstitution, must be used within:

16. Diluents for vaccines should be stored at:

17. Which of the following is NOT a component of the cold chain system?

18. The final link in the cold chain before administration to a patient is typically a:

19. In the Shake Test, a control vial is created by:

20. Which statement about storing vaccines in a domestic (household) refrigerator is TRUE?

21. A “cold chain break” refers to:

22. Where should OPV and Measles vaccines be placed in a standard ILR at a PHC?

23. After performing the Shake Test on a suspected vial of DPT, the sediment in the test vial settles much faster than the control vial. This indicates:

24. What is the main advantage of an Ice-Lined Refrigerator (ILR) over a standard domestic refrigerator for vaccine storage?

25. A VVM on a vaccine vial has its inner square completely white or a very light grey. This means: