From January 21 – June 4, 1918, an experimental bacterial meningitis vaccine cultured in horses by the Rockefeller Institute for Medical Research in New York was injected into soldiers at Fort Riley.
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The same week that Homer Moody and a dozen others in Jean, Kansas, fell ill, a young soldier named Dean Nilson came home to Jean on leave from Camp Funston, located three hundred miles away within the vast Fort Riley military reservation.