败血性李氏杆菌病可能是因食入或吸入病原菌引起的。
Septicemic listeriosis probably develops from ingestion or possibly inhalation of the bacteria.
通常，肉用动物都在可能被李氏杆菌感染的条件下被加工成肉制品。
Often, animals used for meat are processed in conditions that permit listeria to infect them.
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。
Listeria is rare but more deadly than well-known pathogens like salmonella and E. coli.
有些细菌如沙门氏菌在烹煮过程中便能消灭，但像是李氏杆菌等其他菌种，就算高温煎煮炒炸也不受影响。
Some of them like Salmonella are destroyed through cooking, but others like Listeria remain unaffected by a hot frying pan.
疾控预防中心(CDC)的人士指出，李氏杆菌的症状最长可隐匿两个月才显示，十月期间还会有更多的病例。
CDC officials have said the symptoms of listeria can take up to two months to show up and that they expect more illnesses through October.
华盛顿——联邦卫生权威机构表示，科罗拉多哈密瓜携带的李氏杆菌已蔓延到全国，造成21人死亡，死亡人数还会继续增加。
WASHINGTON — Federal health authorities say a nationwide outbreak of listeria in Colorado cantaloupes is now responsible for 21 deaths and the number may continue to grow.
华盛顿——联邦卫生权威机构表示，科罗拉多哈密瓜携带的李氏杆菌已蔓延到全国，造成21人死亡，死亡人数还会继续增加。
WASHINGTON — Federal health authorities say a nationwide outbreak of listeria in Colorado cantaloupes is now responsible for 21 deaths and the number may continue to grow.
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