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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 1

Characteristics of goat and sheep farms sampled for Coxiella burnetii, the Netherlands, January–April 2010*

Farm No. animals culled No. live animals Vaccination period Bulk milk sample PCR result and date of change, 2010†
Unvaccinated goats
A 550 178 NA +
B 102 530 NA Mar
F 53 938 NA Mar
K 121 649 NA Feb
L
324
367
NA
+
Unvaccinated sheep
X
128
378
NA
Jan
Vaccinated goats
H 365 673 2009 Aug–Dec Jan
M 719 3,557 2009 Dec–2010 Jan +
P 625 1,750 2009 Sep–Dec +
Q 685 281 2009 Aug–Oct +
R 3,595 0 2009 Sep–Oct +
S 180 358 2009 Oct +
T 1,081 83 2009 Apr–Sep +

*Data from Animal Health Service and the Food and Consumer Product Safety Authority. Animals were vaccinated with Coxevac (Ceva Santé Animale, Libourne, France). No. live animals is the number of nonpregnant animals remaining after culling. NA, not applicable; +, positive.
†Shown are farms that had a positive PCR result at the start of the culling period (+) and those for which a PCR result changed from negative to positive during the culling period (date).

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