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Low infectious dose (10 bacteria)
toxico-infection; Shiga neurotoxin (AB)
symptoms of Shigella dysenteriae
1-4 day incubation period--- bloody and watery diarrhea, mucus (> 20 stools/day) for 2-7 d
Symptoms of Campylobacter jejuni
Frequent watery stools, fever, vomiting, headache and abdominal pain -2weeks
toxogenic = AB toxin coded on a plasmid that upregulates cAMP --> H2O & electrolyte loss
Vibrio cholerae is transmitted by:
**V. parahaemolyticus causes epidemic shellfish enterocolitis
what are the symptoms of Escherichia coli?
Enterotoxigenic E. coli (ETEC) or dysentery (shiga-like, enteroinvasive (EIEC))
Escherichia coli is transmitted by :
normal flora; fecal-oral. EHEC (O157:H7) causes bloody diarrhea--- HUS
infective dose < 10 organisms
Helicobacter pylori & symptoms
likes acid environment; tropism for gastric mucosa
painful stomach and duodenal ulcers
>>>also called antibiotic associated colitis because it follows broad spectrum antibiotic usage
Normal flora; nosocomial
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