Semmelweis (1818-1865) was a surgeon and obstetrician, a teacher of theoretical and of practical obstetrics at the Royal Hungarian University in Pest. He is the one who is recognised as the saviour of mothers and newborns, who was able to conquer puerperal fever, but was unable to convince his era of the importance of his discoveries.
His observational evidence gain wide acceptance more than twenty years later. He died in Vienna asylum having symptoms of Alzheimer's disease.