Table 2. Number of resistant isolates (# R) and prevalences of resistance to each antimicrobial with 95% confidence intervals (CI) examined for the isolates obtained by passive and active surveillance of poultry S. Heidelberg.
No significant differences were detected by chi-square or Fisher’s Exact tests.
| Active surveillance | Passive surveillance | |||
|---|---|---|---|---|
| Antimicrobial* | # R isolates (total 246) | Prevalence in % (95% CI) | # R isolates (total 84) | Prevalence in % (95% CI) |
| AMC | 55 | 22.4 (17.6–28.0) | 13 | 15.5 (9.3–24.7) |
| AP | 99 | 40.2 (34.3–46.5) | 27 | 32.1 (23.1–42.7) |
| AK | 0 | 0.0 (0.0–1.5) | 0 | 0.0 (0.0–4.4) |
| GM | 11 | 4.5 (2.5–7.8) | 1 | 1.2 (0.1–6.4) |
| KA | 4 | 1.6 (0.6–4.1) | 2 | 2.4 (0.7–8.3) |
| ST | 22 | 8.9 (6.0–13.2) | 13 | 15.5 (9.3–24.7) |
| CF | 55 | 22.4 (17.6–28.0) | 13 | 15.5 (9.3–24.7) |
| CX | 0 | 0.0 (0.0–1.5) | 0 | 0.0 (0.0–4.4) |
| CN | 55 | 22.4 (17.6–28.0) | 13 | 15.5 (9.3–24.7) |
| NAL | 1 | 0.4 (0.0–2.3) | 0 | 0.0 (0.0–4.4) |
| CP | 0 | 0.0 (0.0–1.5) | 0 | 0.0 (0.0–4.4) |
| SX | 13 | 5.3 (3.1–8.8) | 6 | 7.1 (3.3–14.7) |
| SXT | 1 | 0.4 (0.0–2.3) | 1 | 1.2 (0.1–6.4) |
| TE | 6 | 2.4 (1.1–5.2) | 5 | 6.0 (2.6–13.2) |
| CL | 0 | 0.0 (0.0–1.5) | 1 | 1.2 (0.1–6.4) |
* AMC: amoxicillin-clavulanic acid; AP: ampicillin; AK: amikacin; GM: gentamicin; KA: kanamycin; ST: streptomycin; CF: ceftiofur; CX: ceftriaxone; CN: cefoxitin; NAL: nalidixic acid; CP: ciprofloxacin; SX: sulphonamides; SXT: trimethoprim-sulphamethoxazole; TE: tetracycline; CL: chloramphenicol