Infection is rare, but when it happens most often affects pregnant women in last trimester, newborns and children and adults whose immunity is weakened by illnesses such as cancer or HIV. People who have had various types of transplants are also more at risk for listeriosis.
Listeria is a foodborne illness caused by Listeria monocytogenes, a bacterium found in soil and water. This can be in different raw foods, as well as in processed foods and foods from unpasteurized milk. Listeria is unlike many other microbes, because it can grow even in low temperatures in the refrigerator.
Early onset neonatal listeriosis is a 20-30% mortality. Late-onset neonatal listeriosis has a 0-20% rate smrtnosti.Stopa mortality in older children is less than 10%. Hydrocephalus, mental retardation, and other CNS effects have been reported in survivors of L. meningitis.
Symptoms of infection include fever, muscle aches and sometimes nausea and diarrhea. If infection spreads to the nervous system, headache, stiff neck, confusion, loss of balance and convulsions can occur. In otherwise healthy individuals, infection is usually mild.
Most otherwise healthy people exposed to Listeria do not become ill. However, Listeria infection can be devastating to pregnant women and people who have weakened immune systems. Listeria infections cause about 500 deaths annually in the United States, according to the Centers for Disease Control and Prevention (CDC).
Animal diseases that can occasionally infect humans, caused by the bacterium Listeria monocytogenes.Bakterije multiply at temperatures near 0 ° C/32 ° F, which means that they can thrive in a precooked frozen meals if cooking is not exhaustive. Listeria causes a flu-like symptoms and inflammation of the brain and its surrounding membrane. It can be treated with penicillin.
Listeria monocytogenes, for example, encodes the virulence genes that are thermoregulated.Izraz virulence factor is optimal at 37 degrees Celsius, and controls the transcriptional activator, PrfA, whose expression is thermoregulated by PrfA thermoregulator UTR element. At low temperature, PrfA is not translated transcript of the structural elements near the ribosome binding site. As the bacteria infects the host, the melting temperature of the host structure and allows translation initiation of virulent genes.
You get listeriosis by eating food contaminated with Listeria. Children can be born with listeriosis if their mothers eat contaminated food during pregnancy. Although healthy persons may consume contaminated foods without becoming ill, those with increased risk for infection can probably get listeriosis after eating food contaminated with even a few bacteria. People at risk can prevent Listeria infection to avoid certain risky foods and handling food properly.
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Listeria Infections
