This is one of the classic stories of public health, an issue that most U.S. history and world history texts tend to ignore, to the detriment of the students and the classroom outcomes.
This is the story as retold by Christopher Cerf and Victor Navasky in The Experts Speak:
In the 1850s a Hungarian doctor and professor of obstetrics named Ignaz Semmelweis [pictured at left] ordered his interns at the Viennese Lying-in Hospital to wash their hands after performing autopsies and before examining new mothers. The death rate plummeted from 22 out of 200 to 2 out of 200, prompting the following reception from one of Europe’s most respected medical practitioners:
“It may be that it [Semmelweis’ procedure] does contain a few good principles, but its scrupulous application has presented such difficulties that it would be necessary, in Paris for instance, to place in quarantine the personnel of a hospital during the great part of a year, and that, moreover, to obtain results that remain entirely problematical.”
– Dr. Charles Dubois (Parisian obstetrician), memo to the French Academy
September 23, 1858Semmelweiss’ superiors shared Dubois’ opinion; when the Hungarian physician insisted on defending his theories, they forced him to resign his post on the faculty.
Gotta wonder what Dr. Dubois would make of the suits and sanitation procedures required today for health professionals who treat Ebola victims.
More:
- Stephen J. Dubner at the Freakonomics blog pointed to a video, to an essay by Semmelweis, and to a column he and Steven D. Levitt had done earlier on handwashing; Maybe things aren’t as good as we had hoped
- “Why is handwashing important?” press release from the Centers for Disease Control, March 6, 2000
- “In 1850, Ignaz Semmelweis saved lives with three words: wash your hands,” Dr. Howard Markel, PBS Newshour, May 15, 2015
- Semmelweis’s biography at the Semmelweis Society International;
Semmelweis Reflex: The Semmelweis reflex or “Semmelweis effect” is a metaphor for the reflex-like tendency to reject new evidence or new knowledge because it contradicts established norms, beliefs or paradigms.

Yes, this is mostly an encore post. Fighting ignorance requires patience.