Despite various publications of results where hand-washing reduced mortality to below 1%, Semmelweis's practice earned widespread acceptance only years after his death, when Louis Pasteur confirmed the germ theory. In 1865, a nervous breakdown (or possibly Alzheimer's) landed him in an asylum, where Semmelweis died of injuries, at age 47.
http://en.wikipedia.org/wiki/Ignaz_Semmelweis
Ignaz was beaten up at the asylum and died of the very septic pathogen he warned everyone about.
If it cures, they remove it from circulation. This is why we have to bring it all back and retain it!