Read this excerpt from When Birds Get Flu and Cows Go Mad! How Safe Are We?.Getz, David. Purple Death: The Mysterious Flu of 1918. New York: Henry Holt, 2000.This resource would help a reader better understand

The cited book is titled Purple Death: The Mysterious Flu of 1918, so it focuses on the 1918 flu epidemic. That makes it useful for learning more about the epidemic, rather than avian flu specifically or viruses in general.

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