Table 2.
Source of ESBL/AmpC-positive samples (three samplings each) | % ESBL/AmpC-positive samples (total no.) for all farms/all samplings | Detection frequency for farma: |
||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | ||
Pooled feces | 100 (20) | +++ | +++ | +++ | +++ | +++ | o++ | +++ |
Litter | 95.2 (18) | +++ | +++ | +++ | +++ | +++ | −++ | +++ |
Boot swabs | 90.4 (21) | +++ | +++ | +++ | +++ | −++ | −++ | +++ |
Pooled dust | 71.4 (21) | +++ | +++ | +++ | −++ | +−+ | −++ | +−+ |
Environmental swabs | 54.2 (83) | +++ | +++ | +++ | +++ | +++ | −−+ | +++ |
Each sign represents one sampling date; +, positive for ESBL/AmpC-producing E. coli; −, negative for ESBL/AmpC-producing E. coli; o, sample not taken.