Research Article

Polymorphic Amplified Typing Sequences and Pulsed-Field Gel Electrophoresis Yield Comparable Results in the Strain Typing of a Diverse Set of Bovine Escherichia coli O157:H7 Isolates

Table 1

Summary of bovine E. coli O157:H7 isolates used in this study.

Isolates SourceLocationCollection dates

5Dairy cattleYakima Valley, Washington7/22/1991
168Dairy cattleNorthwest Idaho6/7/1993
214Dairy cattleNorthwest Washington6/30/1993
268Dairy cattleWest Oregon8/3/1993
425Dairy cattleNorthwest Washington10/26/1993
528Dairy calfCentral Washington4/21/1994
757Dairy cattleNorthwest Washington6/21/1994
806Dairy cattleSouth Idaho7/5/1994
817Dairy cattleWest Oregon7/6/1994
807Dairy cattleCentral Idaho7/6/1994
827Dairy cattleWest Oregon7/11/1994
908Dairy cattleSouth Idaho7/12/1994
928Dairy cattleNorthwest Oregon7/13/1994
935Dairy cattleNorthwest Oregon7/13/1994
961Dairy cattleNorthwest Oregon7/18/1994
977Dairy cattleCentral Idaho7/25/1994
1015Dairy cattleNorthwest Oregon7/25/1994
1016Dairy cattleSouth Central Washington7/27/1994
1041Dairy cattleNorthwest Oregon8/1/1994
1273Dairy cattleSouthwest Oregon8/30/1994
1286Dairy cattleWestern Washington9/2/1994
1328Dairy cattleWashington Basin9/13/1994
1492FeedlotUnknown10/3/1994
5671Mill feedWSUa Feedmill1/5/1999
5974Dairy cattleWSU Dairy9/1/1999

aWSU: Washington State University, Pullman, WA.