Foodborne Enterobacteriaceae Flashcards
Are the foodborne enterobacteriae gram positive or gram negative? Cocci, rods, or spirochetes?
All Gram Negative Rods
Noninvasion or preinvasion of enterobacteriae results in what kind of diarrhea?
Watery
Destructive or invasive enterobacteriae cause what kind of diarrhea?
Bloody
What usually causes complications after infection by enterobacteriae?
Dehydration and electrolyte loss
When bacteremia follows gut tissue necrosis, is mortality high or low?
Mortality is high
How are virulence factors transferred amongst the enterobacteriae?
Carried on plasmids- makes for easy transfer
What are some common virulence factors of the enterobacteriae?
Fimbriae/pili- attachment, T3SS for immune evasion or host cell invasion, toxins
What are some different types of E. coli? What determines which type of E. coli you get infected with?
Enterotoxigenic/noninvasive, enterohemorrhagic, Enteroinvasive, Uropathic
Depends on acquired virulence factors
Who’s at highest risk for infection by enterobacteriae?
Children
Who’s at highest risk for mortality after infection by enterobacteriae?
Neonates and Elderly
Which enterobacteriae pose a risk for the development of HUS?
Shigella and enterohemorrhagic E. coli (0157:H7)
Which enterobacteriae pose a risk for the development of Reiter’s syndrome/reactive arthritis?
Shigella, Salmonella, and Yersinia
Besides gastroenteritis, what type of infection does E. coli commonly cause?
UTI
Which bug causes Typhoid Fever?
Salmonella typhi
Yersinia enterocolitica and Yersinia pseudotuberculosis typically cause this
False appendicitis
