Sunde Marianne, Tharaldsen Hanne, Marstein Lillian, Haugum Magne, Norström Madelaine, Jacobsen Trond, Lium Bjørn
National Veterinary Institute, Section of Bacteriology, PO Box 750 Sentrum, 0106 Oslo, Norway.
J Vet Diagn Invest. 2011 Mar;23(2):348-50. doi: 10.1177/104063871102300226.
Two follow-up studies of a positive methicillin-resistant Staphylococcus aureus (MRSA) finding in the 2008 European Union baseline survey on MRSA in pig herds were performed to gain more knowledge about the epidemiology of the particular MRSA type, a known human type (ST8/t008), among pigs. Two persons on a Norwegian farm in the study were found to be MRSA carriers, and human-to-animal transmission was suspected. In the first follow-up study, all pigs (n = 346) were sampled by taking nasal swabs. A pooled sample from 5 individual pigs housed together in a single pen, and a dust sample from the equipment in the same room, were positive. Dust samples from a building housing MRSA-negative animals were negative. The MRSA was not detected in the second follow-up, after removing positive animals from the farm and cleaning and disinfecting. A low MRSA occurrence among the animals was found, suggesting that MRSA ST8/t008 may be less able to colonize and persist in pig holdings compared with more host-adapted S. aureus strains.
针对2008年欧盟猪群耐甲氧西林金黄色葡萄球菌（MRSA）基线调查中发现的阳性结果，开展了两项随访研究，以进一步了解特定MRSA类型（一种已知的人类型别，ST8/t008）在猪群中的流行病学情况。研究发现，挪威一个农场的两个人是MRSA携带者，怀疑存在人传人动物的情况。在首次随访研究中，对所有猪（n = 346）采集鼻拭子样本。来自同一猪栏中5头一起饲养的个体猪的混合样本以及来自同一房间设备的灰尘样本呈阳性。饲养MRSA阴性动物的建筑物中的灰尘样本为阴性。在将阳性动物从农场清除并进行清洁和消毒后，第二次随访未检测到MRSA。研究发现动物中MRSA的发生率较低，这表明与更适应宿主的金黄色葡萄球菌菌株相比，MRSA ST8/t008在猪舍中定殖和持续存在的能力可能较弱。
