The Great Influenza - The Deadliest Pandemic in World History
The Great Influenza of 1918 spread rapidly around the world in 1918 by troops in WW I, and 
killed 30 to 50 million making it the worlds greatest natural disaster. John Barry's superb "The Great Influenza: The Story of the Deadliest Pandemic in World History" paints a vivid picture of its horrific impact and frantic efforts of governments around the world to develop necessary vaccines and medical responses.
Top Recommendation for November
The Great Influenza, by John Barry (2005- 546 pp)
The Great Influenza of 1918 killed 30-50 million (3% of the world's population), mostly young adults, making it the deadliest natural disaster in human history.