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A higher incidence of noso comial fungal infection in winter,e lderly patients,and those with resp iratory disease was obvious. 冬季、老年、原發(fā)病為呼吸系統(tǒng)疾病者發(fā)病率較高;廣譜抗生素、免疫抑制劑、皮質(zhì)類固醇的大量應(yīng)用及各種導(dǎo)管技術(shù)的開展是主要易感因素。