Avian - Pandemic: Isn't the Flu Just the Flu: "Seasonal flu is a contagious respiratory illness caused by influenza viruses. Avian flu is caused by avian influenza viruses, which occur naturally among birds. Pandemic flu is a flu that causes a global outbreak, or pandemic, of serious illness that spreads easily from person to person. Learn more about these different types of flu"
Tuesday, February 07, 2006
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