Which of the following is a common vulnerability in the vaccine cold chain during disasters?

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The main idea is that keeping vaccines at the required temperatures depends on reliable electricity. In disasters, electricity outages can abruptly stop refrigeration and freezer units, causing temperature excursions that can compromise vaccine potency or force doses to be discarded. Because power loss is a frequent and broad threat across many disaster scenarios, it stands out as the most common vulnerability in the vaccine cold chain. Transportation delays and storage equipment failures can disrupt the process, but they are not as universally tied to every disaster as power outages, and surge capacity at distribution centers is more about handling demand than a temperature-control vulnerability. Understanding this highlights the importance of backup power plans, fuel reserves, portable cooling options, and continuous temperature monitoring to protect vaccines when the power grid goes down.