Catching the Flu From A Bird
Deaths by HN types
Natural viral cycle, Domestic birds, Mammals, Pandemic
cycle, Humans
KEY: Common virus - Mutated virus
The 1918 Spanish Influenza killed more than 50 million
people worldwide.
Number of deaths in the USA:
Spanish Flu (1918) 500,000
Asian Flu (1957) 70,000
Hong Kong (1968) 34,000