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獨協医科大学病院呼吸器・アレルギー内科を受診したHIV感染者を解析し,わが国および栃木県のHIV 感染者との比較検討を行った.対象は,2002年7月より2009年6月までの間,当科に受診歴のある34名(男27名,女7名,日本人29名,外国人5名),平均年齢は44.2歳(29歳〜67歳).男性の感染理由は,異性間(風俗,不特定)40.7%,同性間37.0%,女性はパートナーからの感染が57.1 %であった.64.7%がAIDS 発症によりHIV感染が判明し,HIV感染判明時の精査では79.4%がAIDSを発症しており,全症例の55.9%にニューモシスチス肺炎の合併を認めた.治療開始が推奨されているCD4陽性細胞低値(350/m l以下)は,97.1%の症例に認めた.以上の結果より,感染理由や年齢層については,全国の平均と同様な傾向を認めた.全国的には,HIV感染判明者の約7割がAIDS 発病前のキャリアの状態でHIV 感染が判明し,栃木県でも同様の傾向である.しかし,当科では大多数がAIDS 発症後およびAIDS 発症直前の低免疫状態でHIV 感染が判明しており,早期発見および早期介入が課題と考えられた., To be clear the clinical characteristics in Tochigi, we analyzedpatients with HIV infection in our department. Patientswith HIV infection between July 2002 and June 2009were 34 subjects (Man:Woman=27:7, Japanese:Foreigner=29:5), and mean age was 44.2 years old. In reasonof HIV infection for men, men who were infected by sexualintercourse with indefinite women were 40.7 % and menwho were infected by sexual intercourse with men were37.0 %. Women who were infected by their partners were57.1 %. 64.7 % of patients were recognized HIV infection byshowing AIDS. 79.4% of patients already had complicationsindicating AIDS, when they came to our hospital, and 55.9% of patients had pneumocystis jiroveci pneumonia. In 97.1% of patients, the number of CD4 positive cells were under350/m l. In conclusion, around 70 % of patients were recognizedHIV infection before they become AIDS in Japan. But,a large majority of patients in our department were withbecoming AIDS or just before AIDS. We need to developthe system of early intervention for HIV infection.