POPM 4040 Lecture Notes - Lecture 1: Bovine Spongiform Encephalopathy, Taenia Saginata, Trichinella Spiralis

• School: University of Guelph
• Department: Population Medicine
• Course: POPM 4040
• Professor: Dr. Scott McEwen

Document Summary

Protozoa (toxoplasma, cryptosporidium), taenia saginata, trichinella spiralis: prions. Usually requires time to multiply fever: duration days to weeks foodborne intoxications , acute intoxication, single or short-term exposure to preformed toxins incubation period < 4 hours. No time needed for multiplication: many different sites of action. Not just the git: usually no fever, duration short (hours) for a single exposure, chronic intoxication longer term exposure (usually > 3 months, usually lower doses than acute intoxication long incubation (latent) period chronic effects. Bloody: if in colon (shigella: abdominal pain and cramping. Extra-intestinal effects/symptoms: hepatitis hepatitis a virus (hav, septicemia salmonella typhi, abortion/still birth listeria monocytogenes, toxoplasma gondii, pharyngitis streptococcus pyogenes, neurological shellfish poisoning: mussels, allergic peanuts reactive arthritis campylobacter, salmonella, yersinia. Agent factors: toxicity infectious dose: pathogenicity / virulence, ability to live outside the host tolerance to environmental stressors (acid, water activity, heat, freezing) Environmental factors: occupation cooks, farmers, slaughterhouse workers race/ethnic group.