1997:H5N1傳染人類

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1997：H5N1傳染人類1997: H5N1 Infects Humans

首次發現直接由禽類傳染人類的流感病毒，此病毒的傳染與接觸家禽市場有關。香港有六人死亡。這種病毒之所以不同，是因爲它並沒有通過傳染豬，使豬成爲中間宿主，而是直接由雞傳染給人類。另外，年輕人中感染最嚴重的病症有些與1918年“西班牙流感”病毒相似。
The first time an influenza virus was found to be transmitted directly from birds to people, with infections linked to exposure to poultry markets. Six people in Hong Kong died. This virus was different because it moved directly from chickens to people, rather than having been altered by infecting pigs as an intermediate host. In addition, many of the most severe illnesses occurred in young adults similar to illnesses caused by the 1918 Spanish flu virus.