單項選擇題男性,29歲,船民,不規(guī)則發(fā)熱1周,持續(xù)高熱5天,伴腹痛,腹瀉每日2~4次,黏液便,于7月中旬住院。體檢:體溫39.8℃,神志清,反應稍遲鈍,心率88次/min,肝脾肋下均可捫及2cm,質(zhì)軟。化驗:WBC3.3×109/L,N0.59(59%),10.38(38%),M0.03(3%),大便光鏡檢WBC2~4/HP,擬診傷寒。診斷傷寒,肥達反應有參考意義的抗體效價標準是()

A."O"≥1:80,"H"≥1:160
B."O"≥1:160,"H"≥1:80
C."O"≥1:80,"H"≥1:320
D."O"≥1:80,"H"≥1:80
E."O"≥1:320,"H"≥1:320


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