Spanish Flu Pandemic Begins: March 1918
In early March 1918, soldiers with the flu began reporting to the infirmary at Camp Funston, an army training camp in Kansas. Within three weeks, 1,100 men at that camp had also come down with the flu. It was the start of a pandemic that would kill as many as 100 million people worldwide.
Though commonly called the Spanish flu (because of a highly publicized outbreak in Spain), it likely began in Haskell, Kansas, where it spread to Camp Funston and from there to the rest of the world. Wartime conditions, like troop movements and overcrowded cantonments, accelerated and aggravated the spread of the virus, which proved to be much deadlier than the normal flu, in part because of a particularly tough strain of pneumonia that often accompanied it.