Results: 53(21.2%) strains was AmpC positive, 98(39.2%) strains was ESBLs positive, and 6(2.4%) strains ESBLs+AmpC positise were found among 250 strains of Gram negative bacilli.

• 结果 :在受检的 2 5 0株革兰阴性杆菌中 ；5 3株(2 1.；2%25 )产AmpC酶；98株 (39