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Listeria monocytogenes is a bacteria  best home service that can be found on foods such as ready-to-eat meals, fish, cold meats, hot dogs, deli meats, pasteurized or unpasteurised milk and soft cheeses such as Brie and Camembert. It can also be present on raw meats, ice cream and raw vegetables, therefore the potential for contamination can be seen to be high when considering the range of popular foods common to the food chain. However clinical tests show the actual levels of contamination on these foods to be low when compared with pathogenic bacteria such as Salmonella, but the mortality rate from the resultant disease, Listeriosis, approaches 25% of infected cases whereas in Salmonella cases the mortality rate is far closer to 1%. Listeria is a genus of bacteria that contains ten species, but it is the L. monocytogenes that is the causative agent of Listeriosis. In very simple terms the bacteria invades cells  best home service in the hosts body and then by growth contamin...