[Lysteria monocytogenes in samples of swines sent to the human alimentary chain].

Animal food-stuffs are known to be potential vehicles of Listeria monocytogenes. The contamination can be caused from processing or enviromental sources and from infected animals. This hypothesis has been checked in the present work. The authors found that 13.2% of 189 swines were carriers of Listeria monocytogenes, the microrganism was isolated from salivary glands, mesenterial gangles and tonsils. The authors suggest some preventive intervention to reduce both the environmental circulation of Listeria monocytogenes and the human risk of infection.