Department of Biomedical Sciences, Division of Experimental and Clinical Microbiology, University of Sassari, Sassari, Italy.
National Reference Centre for Sheep and Goat Mastitis, Istituto Zooprofilattico Sperimentale della Sardegna G. Pegreffi, Sassari, Italy.
Epidemiol Infect. 2013 Mar;141(3):582-4. doi: 10.1017/S0950268812000647. Epub 2012 May 18.
An outbreak of infective mastitis due to Enterococcus faecalis occurred in an intensive sheep farm in north Sardinia (Italy). E. faecalis, which is only rarely isolated from sheep milk, was unexpectedly found in 22·3% of positive samples at microbiological examination. Forty-five out of the 48 E. faecalis isolates showed the same multi-drug resistance pattern (cloxacillin, streptomycin, kanamycin, clindamycin, oxytetracycline). E. faecalis isolates were analysed by pulsed-field gel electrophoresis, and all 45 multi-drug resistant strains showed an indistinguishable macrorestiction profile, indicating their clonal origin. To our knowledge, this is the first report of an outbreak of mastitis in sheep caused by E. faecalis.
在意大利撒丁岛北部的一个密集型绵羊养殖场发生了由屎肠球菌引起的传染性乳腺炎疫情。屎肠球菌通常很少从绵羊奶中分离出来，但在微生物检查的阳性样本中却意外地发现了 22.3%。48 株屎肠球菌分离株中，有 45 株表现出相同的多药耐药模式（苯唑西林、链霉素、卡那霉素、克林霉素、土霉素）。对屎肠球菌分离株进行脉冲场凝胶电泳分析，所有 45 株多药耐药株均表现出相同的不可区分的宏观限制图谱，表明它们具有克隆起源。据我们所知，这是首次报道由屎肠球菌引起的绵羊乳腺炎疫情。
