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感染的一个易被忽视的结局是入侵的微生物虽被宿主抑制,但未彻底消灭,从而造成两方相持的状态。此时感染不活动,但持续存在,当机体免疫力下降时,微生物就有引起急性疾病的可能。这种潜伏感染在临床和流行病学上都十分重要,因为微生物在该宿主体内可再度活动,又可感染新宿主。本文试图总结微生物在人体内潜伏的过程和潜伏感染激发的机理。
One easily overlooked result of infection is that invading microorganisms, although suppressed by the host, have not been completely eliminated, resulting in a stalemate between the two parties. Infection at this time is inactive, but persists. When the immunity of the organism declines, microbes have the potential to cause acute illness. This latent infection is both clinically and epidemiologically important because the microorganisms are reactivated in the host and infect new hosts. This article attempts to summarize the latent processes in humans and the mechanisms underlying latent infection.