Which of the following is a common source of Listeria monocytogenes?

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Multiple Choice

Which of the following is a common source of Listeria monocytogenes?

Explanation:
Listeria monocytogenes is commonly linked to dairy products, especially unpasteurized milk and soft cheeses. It can contaminate dairy processing environments and, importantly, grow at refrigeration temperatures, so refrigerated dairy items can still harbor and even allow growth of the bacteria. Many dairy products are ready-to-eat and are not subjected to a cook step before consumption, which means there isn’t a kill step to eliminate the organism. This combination of persistence in dairy settings, ability to grow in cold conditions, and consumption without cooking makes dairy a frequent source of Listeria.

Listeria monocytogenes is commonly linked to dairy products, especially unpasteurized milk and soft cheeses. It can contaminate dairy processing environments and, importantly, grow at refrigeration temperatures, so refrigerated dairy items can still harbor and even allow growth of the bacteria. Many dairy products are ready-to-eat and are not subjected to a cook step before consumption, which means there isn’t a kill step to eliminate the organism. This combination of persistence in dairy settings, ability to grow in cold conditions, and consumption without cooking makes dairy a frequent source of Listeria.

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