Continuing with our previous mention of the spanish flu, Douglas Almond has a remarkable paper conjecturing that there were long-term negative effects of being exposed to the 1918 Spanish Flu in utero. The paper is titled "Is the 1918 Influenza Pandemic Over? Exposure in the Post-1940 U.S. Population" (JPE 2006)
Disability rates jump for that quarter and the three proceeding from it 62 years after the flu ended (click to enlarge).
click to enlarge).