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首页> 外文期刊>EFSA Journal >Analysis of the baseline survey on the prevalence of methicillin‐resistant Staphylococcus aureus (MRSA) in holdings with breeding pigs, in the EU, 2008 ‐ Part B: factors associated with MRSA contamination of holdings
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Analysis of the baseline survey on the prevalence of methicillin‐resistant Staphylococcus aureus (MRSA) in holdings with breeding pigs, in the EU, 2008 ‐ Part B: factors associated with MRSA contamination of holdings

机译：欧盟，2008年对带有繁殖猪的蛋鸡中耐甲氧西林金黄色葡萄球菌（MRSA）患病率的基线调查分析– B部分：与蛋鸡MRSA污染相关的因素

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A European Union‐wide baseline survey on methicillin‐resistant Staphylococcus aureus (MRSA) was conducted in 2008 in holdings with breeding pigs. A total of 1,600 holdings housing and selling mainly breeding pigs (breeding holdings), and 3,473 holdings housing breeding pigs and selling mainly pigs for fattening or slaughter (production holdings) from 24 Member States and two other European countries were included in the survey. Pooled dust samples collected from holdings were tested for MRSA. The likelihood of a limited set of holding‐level factors to be potentially associated with MRSA‐positive holdings were analysed by multiple regression analysis, separately for breeding and for production holdings. These analyses showed that the risk of holdings of being contaminated with MRSA increased as the number of breeding pigs in the holding increased, in both breeding and production holdings. Analyses at country‐level demonstrated a strong positive association between the prevalence of MRSA‐positive breeding holdings and MRSA‐positive production holdings, suggesting a vertical dissemination of MRSA between the holdings. A complementary country‐level analysis using TRAde Control and Expert System data on intra‐Community trade further disclosed strong positive associations between the prevalence of MRSA‐positive holdings with breeding pigs and the volume of imported breeding pigs, and a proxy for numbers of imported breeding pigs at risk of being colonised with MRSA. Further investigation of the diversity of MRSA Staphylococcus protein A types (spa ‐types) showed that the distribution of spa ‐types differed significantly between countries. Spa ‐types belonging to lineages MRSA ST1, ST5, and ST8 tested negative for Panton‐Valentine leukocidin (PVL) toxin genes, suggesting that these strains were not related to the PVL‐positive MRSA strains known in human medicine. Further investigations of risk factors for MRSA holding contamination at country level, as well as investigations on prevention and intervention measures to contain MRSA contamination in pig holdings are recommended.
机译：欧洲联盟于2008年在种猪场中进行了耐甲氧西林金黄色葡萄球菌（MRSA）基线调查。调查中包括来自1,24个成员国和另外两个欧洲国家的1,600套住房，主要出售和出售种猪（繁殖场），以及3,473套住房以繁殖猪和主要出售育肥或屠宰的猪（生产场）。从收集的收集的灰尘样本中测试了MRSA。通过多元回归分析，分别对繁殖和生产保有量，分析了一组有限的保有量水平因素可能与MRSA阳性保有量相关联的可能性。这些分析表明，在饲养和生产饲养场中，随着MRSA污染的饲养场的风险随着饲养场中繁殖猪数量的增加而增加。国家一级的分析表明，MRSA阳性育种单位的患病率与MRSA阳性生产单位的患病率之间存在很强的正相关性，表明MRSA在各单位之间是垂直分布的。使用关于社区内部贸易的TRAde Control和专家系统数据进行的国家级补充分析，进一步揭示了MRSA阳性保有量与种猪的流行率和进口种猪数量之间的强正相关关系，以及代理进口品种数量的强烈关联有被MRSA定植的风险的猪。对MRSA葡萄球菌A型蛋白（spa型）多样性的进一步研究表明，各国间spa型的分布存在显着差异。属于血统MRSA ST1，ST5和ST8的Spa类型对Panton-Valentine leukocidin（PVL）毒素基因测试呈阴性，表明这些菌株与人类医学中已知的PVL阳性MRSA菌株无关。建议进一步在国家一级对MRSA持有者污染的危险因素进行调查，以及对在猪场中遏制MRSA污染的预防和干预措施进行调查。

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