The infection,caused by abacterium called the Treponema spirochete,first appears as an ulcerous sore,from which it spreads throughout the body,including the brain. Fever,an extensive rash and malaise typically follow. After initial infection,a syphilitic can spend years alternating between bouts of illness and apparently fine health.
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The first few weeks after initial infection, individuals may experience no symptoms or a flu-like illness including fever, headache, rash or sore throat.
在感染后最初几周可能毫无症状，或出现发热、头痛、皮疹或咽痛等流感样疾病症状。
The initial, acute phase lasts for about two months after infection.
最初的急性期在感染之后持续约两个月。
These bacteria migrate from the nose and throat to the middle ear after an initial influenza virus infection paves the way.
一种原发流感病毒感染之后，可以使这些细菌从鼻和咽喉移行至中耳。
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