Essentially, a significant portion of "invalids" in Germany that Nazi targeted first were people impacted by 1918 flu, specifically those who were exposed to it

Essentially, a significant portion of "invalids" in Germany that Nazi targeted first were people impacted by 1918 flu, specifically those who were exposed to it in prenatal stage. This contributed towards the Aktion T-4 program, and one of the common long term effects of the flu was among the targeted diseases, outside of just increased disability counts in German population due to 1918 flu. Reasonable starting point for looking further: https://twitter.com/pookleblinky/status/1332873432468492288 https://twitter.com/pookleblinky/status/1332873432468492288