What is the standard storage temperature range for vaccines in a Medical Store?

• A. 2-8°C.
• B. 15-25°C.
• C. -20 to -10°C.
• D. 8-12°C.

Answer: (A)

Keeping vaccines in a consistent cold chain is essential, so they are stored in a refrigerated environment between 2 and 8°C. This range preserves their potency by preventing heat-related degradation while avoiding freezing, which can damage many vaccine formulations. Storing at room temperature or warmer (like 15-25°C) accelerates degradation and reduces effectiveness, and exposing vaccines to freezing temperatures (-20 to -10°C) can ruin their structure and potency. The 8-12°C option and higher temperatures are outside the validated storage range for most vaccines, increasing the risk of loss of potency. Therefore, 2-8°C is the standard storage range in a Medical Store, with monitoring to prevent temperature excursions.