GI Infections associated with ingestion of pre-formed toxin Flashcards
the staphylococcus Toxin adsorbed quickly→acts directly on ____ nerve & _____ centre→vomiting within ___ hours
Toxin adsorbed quickly→acts directly on vagus nerve & vomiting centre→vomiting within 1-2 hours
large gram positive anaerobic bacillus
clostridium perfringens
___ -__ is part of normal gut flora of humans and animals
Clostridium perfringens
how do we get clostridium perfringens infections?
Spores survive cooking, then turn into vegetative organisms, some strains of which produce enterotoxin (an exotoxin)
Large Gram positive aerobic bacillus
bacillus cereus
the bacillus cereus (Exo)toxin can be ingested as (usually) ___ -____ toxin in ____ OR organism can multiply in ____ , producing toxin that is absorbed from ___
(Exo)toxin can be ingested as (usually) pre-formed toxin in food OR organism can multiply in intestine, producing toxin that is absorbed from gut
how do you get bacillus cereus?
Spores survive cooking, then turn into vegetative organisms that produce toxin
bacillus cereus is associated with what ?
Associated with contaminated inadequately refrigerated reheated rice