诊断书上这样写道：慢性莱姆病，蜱传播的细菌感染。
The diagnosis: chronic Lyme disease, a tick-borne bacterial infection.
莱姆病是由鹿蜱传播给人类的一种细菌引起的。
Lyme disease is caused by a bacterium transmitted to humans by deer ticks.
它由立克次氏体引起，由革蜱属的蜱类传播。
It is caused by Rickettsia rickettsii and spread by ticks of the genus Dermacentor.
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