1882 FRIEDLÄNDER, Carl (1847 – 1887)

Ueber die Schizomyceten bei der acuten fibrösen Pneumonie.

Isolation of Klebsiella pneumoniae (“Friedländer bacillus”), which Friedländer regarded as the causal organism in all cases of lobar pneumonia.

GMN 3174 · https://historyofmedicine.com/id/4160

1886 WEICHSELBAUM, Anton (1845 – 1920)

Ueber die Aetiologie der acuten Lungen- und Rippenfellentzündungen.

Weichselbaum definitely established that Friedländer’s bacillus was responsible for pneumonia in a small percentage of cases.

GMN 3176 · https://historyofmedicine.com/id/4169