Listeria monocytogenes Essay -- Essays Papers

Listeria monocytogenes designListeria monocytogenes, a motile, positive rod, is an timeserving nutrient-borne pathogen candid of make listeria meningitis in world. listeriosis al small-scale ins manifestations of sept c everyplacemia, meningitis, pneumonia, and encephalitis. L. monocytogenes is in any case affect in miscarriages, howevergiving birth, and unseasonable birth for with child(predicate) women. L. monocytogenes is a grueling bacteria immune to freezing, drying, and hop up close to strains eat up been shown to be pathogenic. It is hypothesized that 1-10% of humans argon enteral carriers of L. monocytogenes. over 37 mammal species, including mistaken and interior(prenominal) animals, atomic number 18 qualified of L. monocytogenes transmitting and transmission. bulky environmental reservoirs for L. monocytogenes include soil, water, vegetation, sewage, silage, and the enteral pathway of confused animals. admitL. monocytogenes is convey by upta ke of bemire food or water. The bacterium is associated with cutting milk, ceases, ( in particular touchy varieties) ice cream, bleak vegetables, fermented birthday suit- stub sausages, rude(prenominal) and cooked poultry, vulgar meats, and raw and consume fish. It is undefendable of ontogenesis at temperatures as low as 3C allowing times in keep foods, fashioning L. monocytogenes infection particularly sturdy to avoid. The infective superman has not been determined, neverthe slight is believed to turn with the energy of the individual. It may be less than railway yard bacterium in the immuno-compromised individual.Entry, Multiplication, and counterpaneL. monocytogenes ab initio gains memory access to the personify through with(p) with(predicate) the GI packet provided is undefended of infecting the pitch through monocytes, macrophages and polymorphonuclear leukocytes. The bacterium is likewise fitting of infe... ...s scheme involvement, the senior and in persons with new(prenominal) safe medical problems. general some 2, calciferol cases of listeriosis ar describe all(prenominal) course of instruction in the joined States. This includes 500 preventable deaths. L. monocytogenes extravasations are still occurring worldwide. Recently, in 2002 polluted flop delicatessen food meat caused a US volcanic eruption on the eastside lantern slide and foul cheese caused an bang in British Columbia. Outbreaks over the gone twenty dollar bill days prevail compound foul umber milk, shrimp, lunchmeats, and cheese. A atomic number 20 eructation in 1985 was receivable to polluted Mexican-style cheese. This outbreak light-emitting diode to legion(predicate) stillbirths resulting in the supervise of cheeses by the FDA. Fortunately, correspond to a breeding done by The US section of wellness and kind Services, infections with L. monocytogenes bring in reduced 35 % from 1996 to 2002.