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Escherichia coli was generally resistant to the commonly antibiotics and the drug resistant rate, especially to laevomycetin, ampicillin and cefazolin, was 100%. 大肠埃希菌对常用抗生素普遍耐药，尤其对青霉素、氨节西林、头孢唑啉的耐药率高达100%25。