TABLE 4.
Monthly prevalences of pathogens in cattle feces (NWR herd) and concurrent pathogen findings in birdsa
| Mo | No. of cattle samples | No. (%) of: |
Non-O157 serogroup(s) | Bird findings | ||
|---|---|---|---|---|---|---|
| Salmonella spp. | E. coli O157:H7 | Non-O157 STEC | ||||
| January | 15 | 0 | 0 | 3 (20) | O163 | Negative |
| February | 22 | 0 | 1 (4.5) | 9 (40.9) | O163, O26 | Negative |
| March | 30 | 0 | 0 | 8 (26.7) | O163, O26, O136 | O26 and O84 in the NWR |
| April | 36 | 0 | 0 | 15 (41.7) | O136 | Salmonella sp. in CR |
| May | 18 | 0 | 0 | 8 (44.4) | O121, O145 | Negative |
| June | 22 | 0 | 0 | 1 (4.5) | O136 | Negative |
| July | 20 | 0 | 0 | 1 (5) | O163 | O163 in the NWR |
| August | 20 | 0 | 1 (5) | 6 (30) | O91, O163 | Salmonella sp. in CR |
| September | 20 | 0 | 1 (5) | 11 (55) | O26, O121, O163 | Salmonella sp. and O26 in CR |
| October | 22 | 0 | 1 (4.5) | 11 (50) | O26, O121, O163, O178 | Negative |
| November | 20 | 0 | 0 | 11 (55) | O26, O163 | O103 and O157:H7 in the NWR |
| December | 20 | 0 | 0 | 13 (65) | O26, O121 | Negative |
a
CR, commercial ranch; NWR, national wildlife refuge.