Swine influenza (swine flu) is an acute viral infection of the respiratory tract in pigs caused by type A influenza virus.

猪流感是一种发生在猪身上的高度传染性急性呼吸道疾病，由A型流感病毒引起。

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It is a contagious respiratory disease of pigs caused by type a influenza viruses. Pigs are hit by regular outbreaks.

猪流感是由A型流感病毒引起的猪呼吸道传染病，病毒的定期爆发会引起猪患病。

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Grubman and his colleagues introduced type I and type II interferon genes into an adenovirus, which they administered to groups of pigs.

格鲁曼和同事们把I型和II型干扰素基因转入一种腺病毒中，这种腺病毒是他们注射到多群猪中的。

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Swine flu is a respiratory disease of pigs caused by type A influenza, according to the CDC.

CNN: CDC confirms 7 cases of swine flu in humans

Since 2008, there have been 89 illegal animal violations but the violations database doesn't differentiate animals by type so there's no way to know how many of those violations were for pigs.

WSJ: Pigs May Fly Before Finding a Legal Home in the City

Since 2008, there have been 89 illegal animal violations but the violations database doesn't differentiate animals by type so there's no way to know how many of those violations were for pigs.

WSJ: New Yorkers boldly flout law to keep pigs