He told surgeons to wash their hands—maternal deaths collapsed.
His colleagues mocked him.
Meet Ignaz Semmelweis, the man who saved mothers with soap. A🧵
Instead of celebrating, professors resisted. Semmelweis left Vienna; in Budapest he cut deaths again—then died unrecognised in 1865.
Pasteur & Lister later proved him right.
A lamp made her famous. A chart changed the world.
Florence Nightingale walked into a war hospital of filth and chaos—and used data to stop the dying. A🧵