WRITE ABOUT SVAIN FLU
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A human respiratory infection caused by an influenza strain that started in pigs.
Swine flu was first recognised in the 1919 pandemic and still circulates as a seasonal flu virus. Swine flu is caused by the H1N1 virus strain, which started in pigs.
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Swine flu (H1N1 and H3N2 influenza virus) facts
Swine flu is a respiratory disease caused by influenza viruses that infect the respiratory tract of pigs and result in a barking cough, decreased appetite, nasal secretions, and listless behavior; the virus can be transmitted to humans
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