随着带病毒蜱虫附着人体时间增加，莱姆螺旋体感染几率也随之提升(24小时0%，48小时12%，72小时79%，96小时则高达94%。)幼虱作用人体约需30小时，成虫仅需10小时，幼虱约是成虫的2倍。
The probability of transmission of Lyme disease spirochetes increases the longer an infected tick is attached 0% at 24 hours, 12% at 48 hours, 79% at.
密螺旋体属的病毒在世界各地都有导致感染梅毒的病例，亚特兰大埃默里大学的Kristin Harper分析了26个该菌种的菌株。
Kristin Harper of Emory University in Atlanta analyzed 26 strains of treponemes, the bacterial family that causes syphilis, from various parts of the world.
先前发现与B12最高水平相关的基因变异可以保护胃免受诺沃克病毒的感染，和幽门螺旋杆菌引起的溃疡。
The gene variant associated with the highest B12 levels has previously been determined to protect the stomach from infection by the Norwalk virus and ulcer-causing H. pylori bacterium.
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