Swine flu H1N1 and Why it is Mild

Swine flu viruses are thought to be spread mostly through close contact among pigs and possibly from contaminated objects moving between infected and uninfected pigs herds with continuous swine flu infections and herds that are vaccinated against swine flu may have sporadic disease or may show only mild or no symptoms of infection

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Channels: Microbiology

Tags: Swine Flu A9 H1N1 Why it is Mild

Uploaded by: ( Send Message ) on 23-11-2010.

Duration: 1m 30s