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　　ANALYSIS - Scientists in the US have discovered a strain of E.coli resistant to the antibiotic colistin in the intestine of a pig.The discovery comes at the same time as researchers at the Walter Reed Research Institute in the US identifies the first colistin resistant mcr-1 E.coli in a person.The colistin resistant E.coli discovered in the pig’s intestine has the same mcr-1 gene.It was discovered by scientists from the USDA and Department of Health and Human Services searching for colistin-resistant bacteria in food animals, retail meats and people.The HSS said that the two discoveries are of concern because colistin is used as a last resort drug to treat patients with multi-drug resistant infections.

　　美國科學家在一頭豬的腸道中發(fā)明一株對粘菌素(colistin)有反抗力的大腸桿菌(E.coli)。在發(fā)明的與此同時，美國沃爾特里德研究所(Walter Reed Research)的研究者在人身上識辭出首個攜帶粘菌素抗性基因(mcr-1)的大腸桿菌。美國農(nóng)業(yè)部(USDA)和美國衛(wèi)生及公共服務部(Department of Health and Human Services)的科學家對動物食品、零售肉類和人類的粘菌素抗性細菌進行研究，發(fā)明了豬腸道與人的粘菌素抗性大腸桿菌擁有相同的抗性基因(mcr-1)。HSS說：“這兩個發(fā)明都很故意義，因為粘菌素被用作治療受到雙重耐藥菌感染病人的最后藥物手段?！?/p>