W. R. GRANSDEN, M.A., M.B., B.CH.; DAMM SUE, L.C.S.L.T.; J. D. ANDERSON, M.D., Ph.D.
To the editor: It has recently been suggested that the sorbitol fermentation reaction of Escherichia coli could be used as an effective screening test for the presence of the 0157:H7 serotype in patients with haemorrhagic colitis (1, 2). At the British Columbia's Children's Hospital in Vancouver, we have used this screening method since September 1983, although for wider indications.
All stool specimens from children with diarrhea (with or without blood) as well as urine, stool, and most other specimens from patients with the hemolytic uremic syndrome are directly inoculated onto MacConkey agar plates containing 0.5% sorbitol instead of lactose. Strains
GRANSDEN WR, SUE D, ANDERSON JD. Verocytotoxin-Producing Escherichia coli 0157:H7 and Diarrhea. Ann Intern Med. ;103:160. doi: 10.7326/0003-4819-103-1-160
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Published: Ann Intern Med. 1985;103(1):160.
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