Volume 17, Number 3—March 2011
Research
Reduction of Coxiella burnetii Prevalence by Vaccination of Goats and Sheep, the Netherlands
Table 6
Univariate survival analysis of PCR Ct values for Coxiella burnetii in positive and doubtful samples from culled animals in 13 small ruminant herds, the Netherlands, January–April 2010*
Group |
Uterine fluid | Vaginal mucus | Milk | |||||
---|---|---|---|---|---|---|---|---|
HR (95% CI) |
p value |
HR (95% CI) |
p value |
HR (95% CI) |
p value |
|||
Unvaccinated | 1 | NA | 1 | NA | 1 | NA | ||
Vaccinated | 0.49 (0.39–0.70) | <0.05 | 0.34 (0.28–0.42) | <0.05 | 0.54 (0.39–0.75) | <0.05 |
*Ct, cycle threshold; HR, hazard ratio; CI, confidence interval; NA, not applicable.