LOS ANGELES, Aug. 28 (Xinhua) -- The United States has reported more than 50 illnesses and eight deaths in Listeria outbreak, according to the latest data released Wednesday by the U.S. Centers for Disease Control and Prevention (CDC).

Listeria is a hardy germ that can remain on surfaces, like meat slicers, and foods, even at refrigerated temperatures. It can also take up to 10 weeks for some people to have symptoms of listeriosis, according to CDC.

Epidemiologic, laboratory, and traceback data show that meats sliced at delis, including Boar's Head brand liverwurst, are contaminated with Listeria and are making people sick, according to CDC. Listeria spreads easily among deli equipment, surfaces, hands, and food.

A total of 57 people have been hospitalized due to Listeria infections in the country, and eight deaths have now been reported, according to CDC.

This is the largest listeriosis outbreak since the 2011 outbreak linked to cantaloupe.

The CDC requested the public not to eat recalled deli products. People who are at higher risk of getting sick with Listeria, such as those who are pregnant, are aged 65 or older, or have a weakened immune system, are suggested to avoid eating meats sliced at deli counters, unless heated until steaming hot just before serving.