Ready-to-eat foods under investigation in four states Elderly, pregnant women, and immunocompromised individuals at greater risk from Listeria

Listeria can survive and grow in refrigerated food. It can be killed by heating foods to “steaming hot,” or 165 degrees Fahrenheit, the CDC says. But that’s not always possible — or palatable — for foods that are made to be eaten cold.

A listeria outbreak linked to ready-to-eat sandwiches and snacks has sickened at least 10 people in the U.S., and a producer is voluntarily recalling dozens of products sold to retail stores, hospitals, hotels, airports and airlines, federal officials said.

A listeria outbreak has prompted a recall of packaged snacks in western states. Several people have been hospitalised due to the disease. Health officials have issued urgent warnings about the products.

The FDA and NIH announced a joint nutrition research venture to better understand the causes of diet-related chronic disease, with a goal of answering questions about ultraprocessed foods, food additives, and maternal and infant dietary exposures.

A Listeria outbreak linked to ready-to-eat foods has hospitalized 10 people in California and Nevada, leading to a recall in those states and two others.