Table 1.
Campylobacter positivities in poultry batches and summary statistics (monthly mean ± standard deviation and min–max values) of the weather variables in the five provinces under study, Sri Lanka, October 2009 to July 2011
| Province | No. of Campylobacter-positive batches/total no. of batches sampled | Positivity rate (95% CI) | Temperature (°C) | Rainfall (mm) | Relative humidity (%) |
|---|---|---|---|---|---|
| Central | 34/52 | 65.4% (50.9–78.0%) | 24.9 ± 1.1 (22.2–27.2) | 218.3 ± 139.2 (24.4–546.3) | 77.7 ± 6.2 (61.0–87.4) |
| Western | 51/72 | 70.8% (58.9–81.0%) | 27.8 ± 0.8 (26.0–29.0) | 230.2 ± 239.3 (4.5–971.5) | 76.6 ± 4.5 (65.0–82.1) |
| Sabaragamuwa | 142/231 | 61.5% (54.9–67.8%) | 26.9 ± 1.1 (24.1–29.2) | 334.9 ± 145.4 (111.1–658.5) | 81.2 ± 5.7 (68.0–95.0) |
| North Western | 113/181 | 62.4% (54.9–69.5%) | 27.5 ± 1.2 (25.1–29.5) | 189.3 ± 129.5 (1.5–550.5) | 72.4 ± 6.0 (56.0–78.1) |
| Uva | 6/6 | 100% (54.1–100%)a | 23.5 ± 1.6 (20.7–26.0) | 188.6 ± 112.4 (53.4–440.3) | 75.0 ± 8.8 (62.0–88.9) |
a
One-sided, 97.5% confidence interval.