GI generalities Flashcards
if the org produces ??? you’ll have diarrhea
enterotoxin
LT, ST, Ctx, other Clostricium enterotoxin
ST: ETEC, Yersinia
if the org produces a ??? you’ll have dysentery and fever
cytotoxin: Stx
EHEC, VTEC, STEC and entamoeba are exceptions-typ. no fever
all cytotoxin-producing orgs do what ??
invade
except C. diff and EHEC/STEC/VTEC
if bac invades past submucosa, possibility of ??
pseudoappendicitis (except Shig, EIEC)
reactive arthritis if HLA-B27
Guillain-Barre w. Campy
all invasives are facultative IC pathogens
EXCEPT
Shig, Yersi, Campy, Salmonella
NOT V. vulnificus or V. parahaemolyticus (invasive but not IC)
if org invades there will be ??? in feces
except for
RBCs and WBCs
entamoeba, no WBC
obligate IC pathogens are ???
viruses, Cryptospridium, microsporidia
of the bacteria, only ??? has soil as reservoir
Bacillus
only ?? and ?? are G+ spore formers and quantified
Bacillus and Clostridium
only ?? and ?? have winter seasonality
Yersinia and rotavirus
Fresh water:
Crypto, Giardia, Norwalk virus
Salt water:
vibrio spp., calicivirus, norovirus
peroson to person spread most important for ??
Shigella, Entamoeba, Enterobius, EHEC, rotavirus, norovirus
Trichuris and Ascaris have to incubate in soil
only ??? have humans as sole reservoir
Shigella
Entamoeba
Trichuris
Enterobius
Shellfish, think
Vibrio spp., Norwalk virus