50 關於 Legionnaire’s disease 的敘述，下列何者錯誤？
(A)目前有超過 50 種的 Legionella species 被確認，其中 Legionella pneumophila serogroup 1 是最常見的 致病原
(B) Legionella species 是 small, Gram(-) bacilli
(C) Urine antigen detection 對於 Legionella pneumophila serogroup 1 感染的診斷，Specificity 很高＞99%， 但是 sensitivity 很低＜50%
(D)對於mild到moderate severity的病患，治療的首選藥物為Erythromycin或Doxycycline或Azithromycin 代號：1102 頁次：12－8

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統計： A(3), B(14), C(37), D(6), E(0) #1058945

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Specificity 很高＞99%， ...
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L pneumophila by urinary antigen testing (LPUAT) is a rapid tool for early diagnosis of Legionella infection (6-14). An enzyme immunoassay (EIA) for detecting L pneumophila serogroup 1, which accounts for between 50% and 70% of cases of Legionella pneumonia (15,16), has been shown to be both sensitive and specific. In addition, some studies have shown that the test is capable of cross-reacting with several L pneumophila serogroups and even other Legionella species (6,9). Specificity is typically more than 99% (7-9).

(https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2094914/)

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