1999:H9N2传染人类

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1999:H9N2传染人类

1999:H9N2传染人类1999: H9N2 Infects Humans

第一次出现在人体内。禽类可能是病毒来源。Appeared for the first time in humans. It caused illness in two children in Hong Kong, with poultry being the probable source.