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United States Department of Agriculture
Food Safety and Inspection Service
Washington, DC  20250

Animal and Egg Production Food Safety Staff

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E. coli O157:H7 (log/g) at Necropsy (Day 33) in Cattle Administered E. coli O157:H7 and Probiotic Bacteria
Steer no. Rumen
content		 Rumen
tissue		 Colon
content		 Colon
tissue		 Feces
2 <1.1 <1.1 <1.1 <2.4 <1.1
3 2.5 1.6 <1.1 <2.4 <1.1
6 <1.1 <1.1 <1.1 <2.4 <1.1
7 <1.1 <1.1 <1.1 <2.4 <1.1
9 <1.1 <1.1 <1.1 <2.4 <1.1
10 <1.1 <1.1 <1.1 <2.4 <1.1
15 <1.1 <1.1 <1.1 <2.4 <2.4
18 <1.1 <1.1 <1.1 <2.4 <1.1
20 <1.1 <1.1 <1.1 <2.4 <2.4
22 <1.1 <1.1 <1.1 <2.4 <1.1
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For further information contact:

Food Safety and Inspection Service
Office of Policy, Program Development and Evaluation
Animal and Egg Production Food Safety Staff
1400 Independence Ave., SW
Room 0002
Washington, DC  20250
Telephone:  202-690-2683
Fax:  202-720-8213