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.

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。

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Canine influenza is caused by varieties of Influenzavirus a, such as equine influenza virus H3N8, which in 2004 was discovered to cause disease in dogs.

犬流感由各种甲型流感病毒引起，如马流感病毒H3N8。该病毒于2004年被发现能引起犬流感。

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