(HealthDay News) -- Listeria, a bacterium that may lead to a form of food poisoning, is unusual in that it can thrive in the cold temperatures of your refrigerator, the U.S. Department of Health and Human Services says.
The agency's foodsafety.gov website says these foods can harbor the germ and trigger listeriosis, an infection that can be dangerous to pregnant women and others with a weaker immune system.
Common sources of listeria include: