The isolated rate of MRS from blood specimen was higher than other specimens(P<0.01).
MRS在血标本中的检出率高于分泌物和脓液及其他标本（P<0.01）；
2
Mothod A retrospective analysis 4 544 strains of Gramnegative bacilli isolated from clinical specimen in 6 years(1999~2004) in Yuxi city people's hospital was carried out.