We Heard the Bells: The Influenza of 1918

We Heard the Bells: The Influenza of 1918 – Department of Health and Human Services – January 2010 – In 1918-1919, the worst flu in recorded history killed an estimated 50 million people worldwide. The US death toll was 675000 – five times the number of US soldiers killed in World War I. Where did the 1918 flu come from? Why was it so lethal? What did we learn? – Study materials are available at www.avianflue.gov