TABLE 8.
Monthly prevalences of zoonotic agents present in samples of fresh cattle feces collected between 2000 and 2002
| Month | No. of samples collected | Prevalences (%) of zoonotic agentsa
|
||||
|---|---|---|---|---|---|---|
| E. coli O157 | Salmonella | Campylobacter | Listeria | Cryptosporidium | ||
| January | 33 | 0.0↓ | 12.1 | 9.1 | 0.0↓ | 0.0 |
| February | 44 | 11.4 | 0.0 | 0.0↓ | 31.8 | 9.1 |
| March | 23 | 17.4 | 0.0 | 8.7 | 56.5↑ | 4.3 |
| April | 55 | 15.2 | 0.0 | 0.0↓ | 42.4↑ | 12.1 |
| May | 50 | 18.2↑ | 7.3 | 23.6↑ | 43.6↑ | 9.1 |
| June | 34 | 35.3↑ | 11.8 | 5.9 | 47.1↑ | 14.7↑ |
| July | 102 | 2.9 | 5.9 | 1.0↓ | 11.8↓ | 1.0 |
| August | 57 | 10.5 | 10.5 | 0.0↓ | 22.8 | 5.3 |
| September | 13 | 0.0 | 7.7 | 15.4 | 23.1 | 0.0 |
| October | 13 | 23.1 | 7.7 | 7.7 | 38.5 | 0.0 |
| November | 46 | 6.5 | 2.2 | 10.9 | 0.0↓ | 6.5 |
| December | 29 | 41.4↑ | 6.9 | 44.8↑ | 69.0↑ | 20.7↑ |
a
All samples were from housed cattle and collected within one month of deposition. Prevalences that are significantly lower or higher than those calculated for the same organism from the other 11 months are denoted by ↓ and ↑, respectively.