Carl Friedländer (19 November 1847, Brieg (Brzeg), Silesia – 13 May 1887, Meran (Merano), County of Tyrol) was a German pathologist and microbiologist who helped discover the bacterial cause of pneumonia in 1882.
Friedländer's second communication on the micrococci of pneumonia, which appeared on 15 November 1883, touched off a controversy over the causative agent of pneumonia that continued for the next three years.
In this second report he noted that he had examined more than 50 additional cases of pneumonia and that he had identified bacteria in nearly all of them and that sections from which the bacteria were absent were from the lungs of patients dying late in the course of the disease.
He died a premature death, aged 39 or 40, after a brief stint with a respiratory disease, believed to be caused by his discovered infectious organism, the Friedlander's Bacillus.
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