Histopathology and Pathogenesis of Listeriosis Caused by Listeria monocytogenes Isolated from Raw Milk in Mice

Pathogenicity and histopathology of listeria monocytogene isolates (11) from raw milk in mice was done. Swiss albino mice (18-22 g) were used as experimental animals. All the isolates were pathogenic and caused mortality within 2 to 6 days after intraperitoneal injection. Reisolation of the microorganism from different organs was done. Pathological changes in the liver, spleen, brain, kidneys and intestines were recorded.