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Chapter 25 - Microbial Diseases of the GI Tract Oral-Fecal...

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Microbial Diseases of the GI Tract Oral-Fecal Route of Transmission a. Bacteria-present in fecal contaminated water or foods, or thru certain sex practices b. Bacterial Toxins-present in fecal contaminated foods or incidentally contaminated foods left to incubate at room temperature c. Viruses- present in fecal contaminated waters or foods, or thru certain sex practices d. Protozoans- present in fecal contaminated waters or foods e. Helminths & Parasitic Worms- present in sewage contaminated waters or foods, or by contact with infected fomites or pets Normal Flora Mouth Strep mitis Strep. mutans Staph. Aureus Pharanyx Strep. Pyogenes Haemophilus influenzae Stomach & Small Intestine Very few organisms Diseases: Gastric ulcers- Helicobacter pylori Large Intestine & Colon E. Coli Strep. faecalis Klebsiella pneumoniae
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Food Poisoning Staphylococcal Food poisoning- toxemia caused by enterotoxins produced by bacteria growing in improperly stored alkaline foods. Cooking will NOT destroy this toxin Shigellosis-
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