Roccaro Mariana, Piva Silvia, Scagliarini Alessandra, Giacometti Federica, Serraino Andrea, Merialdi Giuseppe, Frasnelli Matteo, Romano Angelo, Bellio Alberto, Decastelli Lucia, Peli Angelo
Department of Veterinary Medical Sciences, University of Bologna.
Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Reggio Emilia.
Ital J Food Saf. 2018 Apr 11;7(1):6980. doi: 10.4081/ijfs.2018.6980. eCollection 2018 Mar 31.
The objective of this report is to describe an outbreak of pustular dermatitis in a flock of about 200 sheep, its clinical evolution and food safety implications. The onset of the symptoms was sudden and the lesions spread very quickly from ewe to ewe, so that in about 3 days almost all of the lactating sheep were stricken. Pustules from 5 different animals, six milk samples, two cheese samples, teat cup samples from the milking machine and farmer's hands were analysed. A pure culture of , producing staphylococcal enterotoxin (SE) C, was isolated from pustules. Milk and cheese showed a contamination by coagulase positive staphylococci <15 and 30 colony forming units respectively and the absence of SE. Farmer's hands and teat cups samples resulted negative for coagulase positive staphylococci. Therapy with daily topical medicaments was prescribed and a prophylactic intervention was suggested by the administration of an autovaccine. The low level of milk and cheese contamination and the absence of SE in cheese supported the decision to not advise the farmer to recall cheese produced with milk from affected animals.
本报告的目的是描述一群约200只绵羊中脓疱性皮炎的暴发情况、其临床演变以及对食品安全的影响。症状发作突然，病变在母羊之间迅速传播，以至于在大约3天内几乎所有泌乳母羊都受到感染。对来自5只不同动物的脓疱、6份牛奶样本、2份奶酪样本、挤奶机的奶杯样本以及农民的手部进行了分析。从脓疱中分离出一种纯培养物，该培养物产生葡萄球菌肠毒素（SE）C。牛奶和奶酪分别显示凝固酶阳性葡萄球菌污染水平低于15和30菌落形成单位，且未检测到SE。农民手部和奶杯样本的凝固酶阳性葡萄球菌检测结果为阴性。开出了每日局部用药的治疗方案，并建议通过接种自身疫苗进行预防性干预。牛奶和奶酪的低污染水平以及奶酪中未检测到SE，支持了不建议农民召回用受感染动物的牛奶生产的奶酪这一决定。
