These signs and symptoms can indicate bacterial meningitis, a life-threatening complication of a listeria infection. Listeria bacteria can be found in soil, water and animal feces. People can get infected by eating the following:. Pregnant women and people who have weak immune systems are at highest risk of contracting a listeria infection.
Pregnant women are much more susceptible to listeria infections than are other healthy adults. Although a listeria infection might cause only a mild illness in pregnant women, consequences for their babies can include:. Most listeria infections are so mild they can go unnoticed. However, in some cases, a listeria infection can lead to life-threatening complications, including:. If you're pregnant or you have a weak immune system, be particularly cautious about listeria.
Take additional precautions with these types of foods:. Mayo Clinic does not endorse companies or products.
At increased risk are:. Healthy adults and children occasionally get infected with Listeria, but they rarely become seriously ill. Recommendations for persons at high risk, such as those with weakened immune systems and pregnant women, in addition to the recommendations listed above:. The risk of an individual person developing Listeria infection after consumption of a contaminated product is very small. If you have eaten a contaminated product and do not have any symptoms, tests or treatment is not recommended, even if you are in a high-risk group.
However, if you are in a high-risk group, have eaten the contaminated product, and within 2 months become ill with fever or signs of serious illness, you should contact your health care provider and inform them about this exposure.
What is Listeriosis? How is it spread? What are the symptoms? How is it treated? Who is a greatest risk of getting seriously ill from Listeriosis? In pregnant women, listeriosis can cause miscarriage, stillbirth, and serious illness or death in newborn babies. Listeria has been linked to a variety of ready-to-eat foods, including deli meats, hot dogs, smoked seafood and store-prepared deli-salads.
There are many steps that deli operators and processing establishments that supply food to delis can follow to reduce the risk of listeriosis. FDA and FSIS recommend that consumers at risk for developing listeriosis—including older adults, pregnant women and people with compromised immune systems—reheat hot dogs and lunch meats until steaming hot. At-risk consumers are also advised to avoid unpasteurized milk and soft cheeses such as feta, brie, camembert, blue-veined cheeses, "queso blanco," "queso fresco" or Panela , unless they are made with pasteurized milk.
Pregnant women : Pregnant women typically experience only fever and other flu-like symptoms, such as fatigue and muscle aches. However, infections during pregnancy can lead to miscarriage, stillbirth, premature delivery, or life-threatening infection of the newborn. People other than pregnant women : Symptoms can include headache, stiff neck, confusion, loss of balance, and convulsions in addition to fever and muscle aches. How is listeriosis diagnosed and treated?
Listeriosis is treated with antibiotics. How do people get infected with Listeria? What should I do if I ate a food that may have been contaminated with Listeria? Is listeriosis a serious disease? How many people get listeriosis every year? Every year, about 1, people get listeriosis in the United States. Are outbreaks of listeriosis common? What are public health agencies doing to prevent or control listeriosis?
How can I help protect myself and my family from infection?
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