Microorganism Table 2 - Microorganism ID/Taxonomy/Physical...

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Microorganism ID/Taxonomy/Physical Characteristics Natural Host/ Habitat Mode of Transmission Virulence Factors Host Defense Mechanisms Clinical Manifestation Prevention/Treatment Bacteroides fragilis group Anaerobic short gram - rods Colon, vaginal tract Capsule, endotoxin Anaerobic abscesses (mixed infections w/ gram neg facultative rods), local abscesses (intra abdominal/peritonitis), metastatic abscesses (hematogenous spread). Often foot ulcers . Predisposing factors are ulceration, trauma, surgery. The most antibiotic resistant anaerobes. Drugs of choice are metronidazole w/ amnioglycoside (gentamycin) or cefoxitin. Prophylaxis w/ ab and pelvic surgery is peri operative cefoxitin Clostridium tetani Anaerobic gram + rod Spores are widely distributed in soil. Not a normal flora Tetanus toxin Tetanus – symptoms 3-7 days after acute wound Predisposing factors are chronic skin ulcerations and abscesses, diabetes. Passive tetanus
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This note was uploaded on 04/19/2008 for the course MICROBIOLO microbiolo taught by Professor Dr.hoover during the Spring '08 term at Samuel Merritt.

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