NO ONE WILL EVER KNOW with absolute certainty whether the 1918–19 influenza pandemic actually did originate in Haskell County, Kansas. There are other theories of origin, including France, Vietnam, and China. But Frank Macfarlane Burnet, a Nobel laureate who lived through the pandemic and spent most of his scientific career studying influenza, later concluded that the evidence was “strongly suggestive” that the 1918 influenza pandemic began in the United States, and that its spread was “intimately related to war conditions and especially the arrival of American troops in France.”
