Friedrich Fehleisen

Friedrich Fehleisen () (1854–1924) was a German surgeon whose work focused on streptococcal bacteria. Dr. Fehleisen's work played a necessary role in the eventual uncovering of the etiology of many streptococcal illnesses. He made integral contributions to modern medicine's understanding of the "Streptococcus pyogenes" organism. He was born in Reutlingen, Württemberg, in 1854, and died in San Francisco, California, in 1924.
"S. pyogenes".
In 1883, he became the first person to culture and collect "Streptococcus pyogenes", which causes scarlet fever and other streptococcal illnesses. He cultured it from perierysipelas lesions on humans. One year later, the organism received its current name from Rosenbach. German physician Friedrich Loeffler subsequently demonstrated the presence of streptococci in the throats of patients with scarlet fever.
Erysipelas.
Additionally, Dr. Fehleisen uncovered the etiology of erysipelas, which is an acute streptococcal bacterial infection of the upper dermis and superficial lymphatics. His literature "Die Aetiologie Des Erysipels", which was originally published in 1883, outlines his findings. The book was republished in 2010, under the ISBN numbers 1149675756 and 9781149675755 
References.
Fehleisen, F. Etiology of Erysipels Die, Berlin, 1883.