title: Distribution of Shiga-toxigenic Escherichia coli O157 in the gastrointestinal tract of naturally O157-shedding cattle at necropsy.
abstract: Shiga-toxigenic Escherichia coli (STEC) O157 occurrence was determined along the entire gastrointestinal tract (GIT) of each of four naturally shedding cattle and at three sites in 61 slaughter cattle. STEC O157 was distributed along the entire GIT, though interanimal distribution was variable. Neither feces nor rectoanal-junction samples accurately predicted the STEC O157-negative status of any particular animal.
authors.affiliation: USDA, ARS, U.S. Meat Animal Research Center, P.O. Box 166, State Spur 18D, Clay Center, NE 68933, USA.
authors.forename: James E
authors.initials: JE
authors.lastname: Keen
authors.forename: William W
authors.initials: WW
authors.lastname: Laegreid
authors.forename: Carol G
authors.initials: CG
authors.lastname: Chitko-McKown
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Durso
authors.forename: James L
authors.initials: JL
authors.lastname: Bono
mesh_terms: D000818:Animals; D057138:Bacterial Shedding; D002417:Cattle / Q000382:microbiology*; D004927:Escherichia coli Infections / Q000382:microbiology* / Q000662:veterinary*; D019453:Escherichia coli O157 / Q000302:isolation & purification*; D005243:Feces / Q000382:microbiology; D041981:Gastrointestinal Tract / Q000382:microbiology*