HACEK
fastidious gram-negative bacilli 挑剔的一群嗜血凝聚心的愛啃王
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Haemophilus species 嗜血
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Aggregat-ibacter 凝聚桿
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Cardio-bacterium 心桿菌
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Eiken-ella 愛啃
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King-ella 王
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嗜血的，聚在一起，Cradio，愛啃 ella，Kingella
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Hema Aggregat Cradio EkenElla King Ella
10% of culture negative-bacterial endocarditis