Note: Initial infection with HIV may produce no symptoms.

注意：HIV感染早期一般不会有症状。

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Following initial infection, approximately 80% of people do not exhibit any symptoms.

最初被感染后，大约80%的人并不会出现任何症状。

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The occurrence of disease was closely correlated to the initial infection sources and species of peony tree.

病害发生与牡丹不同品种、初侵染源等因子密切相关。

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The arrests themselves, in Mr Drucker's telling, represent an initial infection of sorts.

ECONOMIST: A look at America's sentencing system

The virus is thought to have originated in bats, but how the initial infection gets passed to humans remains a mystery.

BBC: Threat from novel coronavirus 'remains low'

Initial infection is with a drive-by download on an otherwise innocent site.

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