Opportunities to Reduce the Risk of Shedding of E. coli 0157 by Cattle: Implications for Beef Safety, the Environment and Public Health

摘要

E. coli O157: H7 began to be identified as a public health issue in the 1980's. While beef and beef products have been the most common single source of illness, indicating cattle are the primary reservoir for this pathogen, outbreaks have also been associated with many food commodities, including dairy products, beverages and produce (Rangel et al. 2005). In addition, outbreaks have been associated with water contamination (Ali, 2004) and direct contact with livestock at fairs and expositions, particularly cattle (Steinmuller, et al. 2006 and Keen et al. 2006). E coli O157:H7 has been identified in wildlife although it is uncertain if these infections are simply spill over from domestic cattle or sustainable infections. There is a distinct seasonalprofile and relationship between shedding of E. coli O157:H7 by cattle, beef contamination and human illness associated with various food sources and human contact with livestock.