How does swine flu spread among pigs? 猪流感病毒如何在猪之间传播？
Are there any medications against Swine Flu? 有什么药能够对抗猪流感么？
swine flu英英释义
Noun:
an acute and highly contagious respiratory disease of swine caused by the orthomyxovirus thought to be the same virus that caused the 1918 influenza pandemic
