Association Régionale de Santé et d'Identification Animales (ARSIA), Avenue Alfred Deponthière 40, B-4431 Loncin, Belgium.
Vet J. 2012 Jun;192(3):529-31. doi: 10.1016/j.tvjl.2011.08.033. Epub 2011 Oct 1.
In 2006, a cross-sectional survey was carried out in 206 herds in southern Belgium to estimate the proportion of herds with Q fever-seropositive bulk tank milk (BTM), i.e. herds with an intra-herd seroprevalence >10%. Of the tested herds, 119 (57.8%; 95% CI: 51.1-64.4%) were seropositive. Most had a low antibody titre. Of these herds, 50 were randomly subjected to a real time Coxiella burnetii PCR analysis. The proportion of herds excreting Coxiella in BTM was 30.0% with only 2.0% of herds having a high level of shedding. An additional questionnaire and logistical regression identified some factors which increased the risk of BTM seroconversion (in heifers, drinking water from watercourse or well water) and some which decreased it (in heifers, tie- and free-stalling, and animals of all age in the same shed; in heifers and cows, shed disinfection).
2006 年，在比利时南部的 206 个畜群中进行了一项横断面调查，以估计 Q 热血清阳性的散装奶（BTM）畜群的比例，即畜群内血清阳性率>10%。在检测的畜群中，119 个（57.8%；95%CI：51.1-64.4%）呈血清阳性。大多数畜群的抗体滴度较低。其中 50 个畜群被随机进行实时柯克斯体 PCR 分析。BTM 中排泄柯克斯体的畜群比例为 30.0%，只有 2.0%的畜群有高水平的脱落。一份补充问卷和逻辑回归确定了一些增加 BTM 血清转化风险的因素（在小母牛中，饮用溪流或井水），以及一些降低风险的因素（在小母牛中，拴系和自由卧床，以及同一畜舍中的所有年龄的动物；在小母牛和奶牛中，畜舍消毒）。
