GI generalities Flashcards

1
Q

if the org produces ??? you’ll have diarrhea

A

enterotoxin
LT, ST, Ctx, other Clostricium enterotoxin
ST: ETEC, Yersinia

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2
Q

if the org produces a ??? you’ll have dysentery and fever

A

cytotoxin: Stx

EHEC, VTEC, STEC and entamoeba are exceptions-typ. no fever

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3
Q

all cytotoxin-producing orgs do what ??

A

invade

except C. diff and EHEC/STEC/VTEC

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4
Q

if bac invades past submucosa, possibility of ??

A

pseudoappendicitis (except Shig, EIEC)
reactive arthritis if HLA-B27
Guillain-Barre w. Campy

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5
Q

all invasives are facultative IC pathogens

EXCEPT

A

Shig, Yersi, Campy, Salmonella

NOT V. vulnificus or V. parahaemolyticus (invasive but not IC)

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6
Q

if org invades there will be ??? in feces

except for

A

RBCs and WBCs

entamoeba, no WBC

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7
Q

obligate IC pathogens are ???

A

viruses, Cryptospridium, microsporidia

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8
Q

of the bacteria, only ??? has soil as reservoir

A

Bacillus

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9
Q

only ?? and ?? are G+ spore formers and quantified

A

Bacillus and Clostridium

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10
Q

only ?? and ?? have winter seasonality

A

Yersinia and rotavirus

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11
Q

Fresh water:

A

Crypto, Giardia, Norwalk virus

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12
Q

Salt water:

A

vibrio spp., calicivirus, norovirus

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13
Q

peroson to person spread most important for ??

A

Shigella, Entamoeba, Enterobius, EHEC, rotavirus, norovirus

Trichuris and Ascaris have to incubate in soil

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14
Q

only ??? have humans as sole reservoir

A

Shigella
Entamoeba
Trichuris
Enterobius

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15
Q

Shellfish, think

A

Vibrio spp., Norwalk virus

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