microlicious
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| List general characteristics of enterobacteriaceae. | Gram neg rods, catalase pos, oxidase neg, glucose fermenters
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| What are the surface antigens on enterobacteriaceae? What are they associated with? | K--> capsular
O-->somatic
H-->flagellar
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| Of the Enterics name the true pathogens. | Yersinia, Salmonella, Shigella, and E. coli.
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| When you see a clear red colony with a black center on XLD, what organism is likely? | Salmonella spp.
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| Enlarged lymphnodes can be caused by which enterobacteraceae? What is the name of the enlarged lymph nodes when associated with this organism? | Yersinia pestis, bubo
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| What is HUS? What organism is associated with this condition and the subgroup of the infection. | Hemolytic uremic symdrome; caused by E. coli, EHEC=enterohemorrhagic E. coli.
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| What strain is associated with EHEC? | O157:H7
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| Name a virulence factor for EHEC | Shiga toxin
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| **add card about sorbitol and o157 | ***
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| How is EHEC transmitted and what is a symptom of the illness. | Undercooked ground beef and raw milk (unpasteurized)
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| What is ETEC? What is it's primary virulence factor? | enterotoxigenic E. coli; contains a enterotoxin similar to V. cholerae.
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| What is the EIEC and what is the main symptom? | Enteroinvasive E. Coli; causes dysentery via direct penetration, invasion, and then destruction of intestinal mucosa.
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| What is the virulence factor of EIEC and what other organism acts similarly? | Direct invasion of the enterocytes; similar action in Shigella
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| What is commonly seen in the stool of people with dysentery? | Mucus and blood
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| ETEC causes what illness? | Traveler's diarrhea or childhood diarrhea.
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| What is EPEC? What is the virulence factor? | enteropathogenic E. coli; organism attaches to the cell surface and causes changes in the cell surface.
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| What is a common symptom in patients with EPEC? | Diarrhea with mucoid stools (blood but not large amounts)
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| WHat is EggEC? What is the virulence factor and the symptoms? | enteraggregative E. coli; organism adheres to mucosal surface; watery diarrhea
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| Which two species of Klebsiella are we concerned with? | K. oxytoca and K. pneumoniae
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| What type of pathogen is K. oxytoca and K. pneumo? What infections can they cause? | Opportunistic; causes bacterial pneumonia in alcoholics, wound infections, UTI, bacteremia
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| What is the colony morphology of klebsiella? | very mucoid tot he point that it can drip onto the lid if inverted.
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| What is the virulence factor for klebsiella? | The polysaccharide capsule.
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| **What drug is klebsiella sp resistant to?** | Ampicillin
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| What kind of infections can enterobacter cause and what type of pathogen is it? | wound infections, UTI, bacteremia, meningitis, respiratory tract infections; oppurtunistic.
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| What drugs are enterobacter species resistant to? | Ampicillin + 1st and 2nd generation cephalosporins
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| Which two species are we concerned with in the clinical lab? | E. aerogenes, E. cloace
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| On the plate which other organism does enterobacter resemble? | Klebsiella
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| What is CIN media selective for? | Yersinia
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| When a disease is transmitted by animals it is called what? | Zoonoses
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| What test can differentiate K. oxytoca and K.pneumo? | Indole+ = K. oxytoca
Indole- = K. pneumo
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| What is HE selective for? What does the plate look like when the organism selected for is present? | gram-neg non-fermentors; green
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