Table 1.
Prevalence repeated sampling
|
Antibodies |
Agent |
|||||
|---|---|---|---|---|---|---|
| n | Prevalence (%) | (95% CI) | n | Prevalence (%) | (95% CI) | |
| September 2010 |
114 |
61.4 |
(56.6 – 66.2) |
113 |
57.8 |
(48.4 – 67.2) |
| January 2011 |
119 |
62.7 |
(57.8 – 67.6) |
119 |
46.4 |
(47.3 – 65.5) |
| June 2011 |
118 |
55.9 |
(50.8 – 61.0) |
116 |
55.2 |
(46.0 – 64.3) |
| October 2011 | 113 | 64.6 | (55.6 – 73.6) | 113 | 58.9 | (49.7 – 68.2) |
Prevalence and 95% confidence interval (CI) of antibodies against Coxiella burnetii and of DNA from the agent in bulk milk on four sampling occasions including 113 to 119 herds located on the Isle of Gotland, Sweden.