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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 Only
Steer No. Rumen
content		 Rumen
tissue		 Colon
content		 Colon
tissue		 Feces
1 3.6 3.1 4.8 5.0 5.1
4 1.5 1.5 1.6 <2.4 1.3
5 <1.1 1.1 <2.4 <2.4 <1.1
8 3.1 2.6 4.9 5.2 5.7
11 <1.1 1.2 <1.1 4.3 <1.1
13 <1.1 1.5 2.4 4.8 <1.1
16 <1.1 2.5 <1.1 3.4 <1.1
17 3.4 1.9 1.2 <2.4 <1.1
21 <1.1 1.5 1.4 3.1 1.0
24 <1.1 1.2 1.4 <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