Volume 12, Number 5—May 2006
Dispatch
Shiga-toxigenic Escherichia coli O157 in Agricultural Fair Livestock, United States
James E. Keen*
, Thomas E. Wittum†, John R. Dunn‡, James L. Bono*, and Lisa M. Durso*
, Thomas E. Wittum†, John R. Dunn‡, James L. Bono*, and Lisa M. Durso*
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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