Table 2. Most probable numbers of bacteria per gram of feces from naturally infected feedlot cattle positive for Escherichia coli O157:H7.

Range of MPN/g of feces	Number of samples in range (%)
0–0.1	40 (20.5)
0.1–1	47 (24.1)
1–10	58 (29.7)
10–100	26 (13.3)
100–1,000	18 (9.2)
1,000–10,000	4 (2.1)
10,000–100,000	2 (1.0)
Total	195