Volume 17, Number 3—March 2011
Research
Reduction of Coxiella burnetii Prevalence by Vaccination of Goats and Sheep, the Netherlands
Table 3
Efficacy of vaccination against Coxiella burnetti for 957 animals in 13 small ruminant herds, the Netherlands, January–April 2010*
Group |
Uterine fluid |
Vaginal mucus |
Milk |
|||||||||||
No. |
Pos |
D |
E, % |
No. |
Pos |
D |
E, % |
No. |
Pos |
D |
E, % |
|||
Unvaccinated | ||||||||||||||
Young | 249 | 92 | 27 | NA | 215 | 178 | 9 | NA | NA | NA | NA | NA | ||
Old | 238 | 33 | 20 | NA | 205 | 142 | 4 | NA | 242 | 79 | 31 | NA | ||
Subtotal |
487 |
125 |
47 |
NA |
420 |
320 |
13 |
NA |
242 |
79 |
31 |
NA |
||
Vaccinated | ||||||||||||||
Young | 241 | 1 | 1 | 98 | 198 | 53 | 21 | 57 | NA | NA | NA | NA | ||
Old | 228 | 1 | 4 | 90 | 206 | 69 | 37 | 28 | 248 | 10 | 22 | 72 | ||
Subtotal |
470 |
2 |
5 |
NA |
404 |
122 |
58 |
NA |
248 |
10 |
22 |
NA |
||
Total | 957 | 127 | 52 | NA | 824 | 442 | 71 | NA | 490 | 89 | 53 | NA |
*No., no tested; pos, no. with positive result; D, no. doubtful; E, vaccine efficacy; young, nulliparous; NA, not applicable; old, pregnant and lactating.