November 8, 2011

Listeria Symptoms

Infection is rare but when it happens often affects pregnant women in last trimester of their infants, and children and adults that immunity is weakened by diseases such as cancer or HIV. People have different types of transplants are at high risk for listeriosis.

Listeriosis is a foodborne illness caused by Listeria monocytogenes, a bacterium found in soil and water. This may be a variety of raw foods and processed foods and foods made from unpasteurized milk. Listeria is different from other germs that can grow even in the cold from the refrigerator.

Early neonatal listeriosis has a mortality rate of 20-30%. Late-onset neonatal listeriosis has a mortality rate 00-20%. Mortality in older children is less than 10%. Hydrocephalus, mental retardation, and CNS sequelae have been reported in patients with Listeria meningitis.

The Listeria Symptoms of infection include fever, muscle aches, and sometimes nausea or diarrhea. If infection spreads to the nervous system, headache, stiff neck, confusion, loss of balance and convulsions can occur. In 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 with weakened immune systems. Listeria infection causes about 500 deaths annually in the United States, Center for Disease Control and Prevention (CDC).

Animal diseases that can sometimes infect humans, caused by the bacterium Listeria monocytogenes. Bacteria multiply at temperatures near 0 ° C/32 ° F, which means that he can succeed in the frozen food is cooked if the kitchen is not complete. Listeriosis causes flu-like symptoms and swelling of the brain and surrounding membranes. It can be treated with penicillin.

Listeria monocytogenes, for example, genes coding for virulence of thermoregulation. Optimal expression of virulence factors at 37 degrees Celsius and is controlled by a transcriptional activator, PrfA, whose expression is through the elements of PrfA thermoregulator UTR thermoregulation. At low temperatures, transcription PrfA is not translated because of the structural elements near the ribosome binding site. While the bacteria infect the machine, engine temperature and melt structure allows initiation of translation of virulence genes.

You get listeriosis by eating food contaminated with Listeria. Babies can be born with listeriosis if their mothers eat contaminated food during pregnancy. Although healthy persons may consume contaminated foods without becoming ill, those at high risk for infection can probably get listeriosis after eating food contaminated with even a few bacteria. People at risk can prevent Listeria infection by avoiding certain high-risk foods and handling food properly.


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