Which measure is essential for maintaining vaccine potency during a disaster vaccination campaign?

• A. Reliable refrigeration
• B. Storing vaccines at room temperature for short periods
• C. Relying on natural ambient temperatures
• D. Delaying vaccine distribution

Answer: (A)

Maintaining vaccine potency hinges on preserving the cold chain. Vaccines are sensitive to heat, and exposure to higher temperatures can degrade their effectiveness. In a disaster vaccination campaign, reliable refrigeration keeps vaccines within the recommended temperature range from manufacturing through storage and into administration, preventing potency loss. Because power outages and disrupted infrastructure are common in disasters, having dependable refrigeration—with backup power, continuous temperature monitoring, and validated storage equipment—is key to ensuring vaccines stay effective. Storing vaccines at room temperature, relying on ambient temperatures, or delaying distribution risks potency loss, wasted doses, and reduced protection for people. So, keeping vaccines in reliable refrigeration is the essential measure to preserve potency in these settings.