| prevalence of escherichia coli o157:h7 and performance by beef feedlot cattle given lactobacillus direct-fed microbials. | fecal shedding of escherichia coli o157:h7, the prevalence of escherichia coli o157:h7 in pens and on carcasses and hides, and cattle performance as a result of daily dietary supplementation with lactobacillus-based direct-fed microbials (dfms) were evaluated in a feeding trial involving 180 beef steers. steers were evaluated for shedding of e. coli o157:h7 by an immunomagnetic separation technique on arrival at the feedlot, just before treatment with the dfms, and every 14 days thereafter until ... | 2003 | 12747680 |
| shiga-toxigenic escherichia coli o157:h7 infections among livestock exhibitors and visitors at a texas county fair. | we report an agricultural fair-associated shiga-toxigenic escherichia coli o157:h7 (stec o157) outbreak that was unusual in that it affected both livestock exhibitors and visitors. twenty-five human cases of stec o157 infection were detected after the fort bend county fair in rosenberg, texas, which ran from 9/26/03 to 10/04/03. seven cases were culture-confirmed. there were four hemolytic uremic syndrome (hus) cases, and one thrombotic thrombocytopenic purpura (ttp) case. cases ranged in age fr ... | 2005 | 16011437 |