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Volume 12, Number 5—May 2006

Dispatch

Shiga-toxigenic Escherichia coli O157 in Agricultural Fair Livestock, United States

James E. Keen*Comments to Author , Thomas E. Wittum†, John R. Dunn‡, James L. Bono*, and Lisa M. Durso*
Author affiliations: *United States Department of Agriculture, Clay Center, Nebraska, USA; †Ohio State University, Columbus, Ohio, USA; ‡Louisiana State University, Baton Rouge, Louisiana, USA

Main Article

Table 1

Escherichia coli O157 livestock fecal or pest fly isolation rates from 32 US county and state fairs, 2002*

Sample No. samples collected No. (%) STEC O157:H7 positive No. (%) stx-negative E. coli O157:H7 positive No. (%) stx-negative E. coli O157:non-H7 positive
Beef cattle 1,163 151 (13.0) 9 (0.8) 7 (0.6)
Dairy cattle 244 10 (4.1) 0 11 (4.5)
Pigs 1,102 13 (1.2) 9 (0.8) 19 (1.7)
Sheep 251 11 (4.4) 0 6 (2.4)
Goats 113 2 (1.8) 0 1 (0.9)
Other livestock† 46 0 0 0
Fly pools 154 8 (5.2) 1 (0.7) 7 (4.6)
All samples 3,073 195 (6.3) 19 (0.6) 51 (1.7)
All livestock 2,919 187 (6.4) 18 (0.6) 44 (1.5)

*STEC, Shiga-toxigenic Escherichia coli.
†Includes 15 chickens, 14 rabbits, 10 horses, 2 alpacas, 1 llama, 1 donkey, 1 pony, 1 turkey, and 1 guinea fowl sampled at 8 county fairs.

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