IGEVET   21075
INSTITUTO DE GENETICA VETERINARIA "ING. FERNANDO NOEL DULOUT"
Unidad Ejecutora - UE
capítulos de libros
Título:
Listeria monocytogenes Outbreaks: Epidemiological Update and Control Possibilities
Autor/es:
PELLICER K.; BRUSA V.
Libro:
Listeria Monocytogenes: Incidence, Growth Behavior and Control
Editorial:
Nova Science Publishers
Referencias:
Lugar: Nueva York; Año: 2015; p. 33 - 44
Resumen:
Listeria monocytogenes is a gram positive bacterium which causes illness in animals and humans. This foodborne pathogen is the etiologic agent of listeriosis and can lead to spontaneous abortion in pregnant women, meningitis and encephalitis in newborns, children and immuno-suppressed adults, and gastroenteritis in health persons (Donelly, 1994; Pilchová et al., 2014; Posfay-Barbeand Wald, 2004; Seeliger, 1961; Shih-Yu et al., 2007; Smith et al., 2009). L. monocytogenes is frequently detected in environmental samples and can survive for long periods in soil, water, feed and feces, providing be a source of contamination for the food and water chain (CDC (Center for Disease Control and Prevention); Fox et al., 2009).L. monocytogenes and L. innocua are frequently isolated from food processing plants. However, most of the cases of listeriosis transmitted through food are due to the contamination of raw or cooked foods with L. monocytogenes. The minimum infective dose of L. monocytogenes has not been established yet, although it has been indicated that the intake of up to 100 cells does not affect healthy consumers. The long incubation time of listeriosis makes difficult to identify the pathogen and trace the contaminated food (Gandhi and Chikindas, 2007). There are 13 serovars known of L. monocytogenes, and four of them (1/2a, 1/2b, 1/2c y 4b) are responsible for over 95% of reported human listeriosis cases. The major outbreaks have been caused by L. monocytogenes 4b. In general, mortality rate is low, however in inmuno-supressed and susceptible patients this rate is 20 ? 30% (Donelly, 1994).