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Listeria bacteria grow in moist , muddy conditions and are often carried by animals .

李氏杆菌生长在潮湿、泥泞的环境中，通常由动物携带。

Government health officials said this is the first known outbreak of listeria in cantaloupe .

政府卫生官员指出，疫情爆发由蜜瓜携带李氏杆菌引起尚属首次。

Listeria is rare but more deadly than well-known pathogens like salmonella and e. coli .

李氏杆菌虽不常见，但其致命毒性超过诸如沙门氏菌和大肠杆菌等著名的病原体。

While most healthy adults can consume listeria with no ill effects , it can kill the elderly and those with compromised immune systems .

大多数健康的成年人食用李氏杆菌后不会致病，但它会造成老年人和免疫系统不佳的人士死亡。

Louisiana has said it is investigating two listeria deaths possibly related to the outbreak that aren 't included in the cdc 's count .

路易斯安那州表示，该州正在调查可能和疫情相关的两例李氏杆菌死亡病例，这两例不在计入疾控预防中心统计的数据里。