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Volume 17, Number 3—March 2011

Research

Reduction of Coxiella burnetii Prevalence by Vaccination of Goats and Sheep, the Netherlands

Lenny HogerwerfComments to Author , René van den Brom, Hendrik I.J. Roest, Annemarie Bouma, Piet Vellema, Maarten Pieterse, Daan Dercksen, and Mirjam Nielen
Author affiliations: Author affiliations: Utrecht University, Utrecht, the Netherlands (L. Hogerwerf, A. Bouma, M. Pieterse, M. Nielen); Animal Health Service, Deventer, the Netherlands (R. van den Brom, P. Vellema, D. Dercksen); Central Veterinary Institute of Wageningen UR, Lelystad, the Netherlands (H.I.J. Roest)

Main Article

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.

Main Article

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