高传染性的马流感病毒H3N8引起的犬流感最早被发现于2004年一月的举行于佛罗里达的灵缇犬比赛中。被感染的犬只发生呼吸疾病症状。

The highly contagious equine influenza virus H3N8 was found to have been the cause of Greyhound race dog fatalities from a respiratory illness at a Florida racetrack in January 2004.

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然而，在1984年至2004年间从灵缇赛犬的血浆测试中发现犬流感病毒（CIV）的感染可以被追溯到1999年。

However, serum collected from racing Greyhounds between 1984 and 2004 and tested for canine influenza virus (CIV) in 2007 had positive tests going as far back as 1999.

youdao

然而，在1984年至2004年间从灵缇赛犬的血浆测试中发现犬流感病毒（CIV）的感染可以被追溯到1999年。

However, serum collected from racing Greyhounds between 1984 and 2004 and tested for canine influenza virus (CIV) in 2007 had positive tests going as far back as 1999.

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