FOOD 2150 Lecture Notes - Lecture 7: Shigatoxigenic And Verotoxigenic Escherichia Coli, Hazard Analysis And Critical Control Points, Rotavirus
4 Dec 2018
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Slide 2 3: coli enterohemorrhagic has an onset of 3-8 days, with symptoms including watery, bloody diarrhea due to a toxin that is able to lyse the epithelial cells in the colon. Infections are associated with the consumption of vegetables, water, and cattle, although most commonly in bad water supplies in scenarios such as walkerton. The source of contamination is cattle (they are a natural revivor for e. coli) as they do not show signs of infection. The best prevention against e. coli infection is cooking foods properly, as these bacteria cannot survive at high temperatures. Enterohemorrhagic e. coli is a zoonotic infection a disease that can be transferred from an animal to a human. Another example of a zoonoses include swine flu. In walkerton, due to heavy rainfall fecal matter from cattle found its way into the water supply which caused over 2,000 cases and 6 deaths. Viruses cannot replicate in foods, and instead uses food as a vector.
