單項(xiàng)選擇題患者女性,45歲。3天前突發(fā)高熱,寒戰(zhàn),腰痛,并有尿頻、尿急及排尿疼痛。查體:T39℃,右脊肋區(qū)壓痛及叩擊痛,尿檢:外觀混濁,RBC8/HP,WBC30/HP,臨床診斷為急性腎盂腎炎。對該菌所致尿路感染具有診斷意義的菌落計(jì)數(shù)為().

A.>103cfu/ml
B.>104cfu/ml
C.104~105cfu/ml
D.<105cfu/ml
E.>105cfu/ml


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