Education
Borrel studied natural sciences at the University of Montpellier, where he earned his degree in 1890.
Borrel studied natural sciences at the University of Montpellier, where he earned his degree in 1890.
From 1892 to 1895, Borrel worked in the laboratory of Ilya Ilyich Metchnikoff (1845–1916) at the Pasteur Institute in Paris. Here he performed research of tuberculosis, and with Alexandre Yersin (1863–1943) and Léon Charles Albert Calmette (1863–1933), he worked on a vaccine against bubonic plague. With Yersin and Calmette, he co-published the treatise Le microbe de la peste à bubons concerning the plague bacillus.
He is also credited for pioneer investigations on the viral theory of cancer.
From 1896 to 1914 he served as laboratory chief of the microbiology course at the Pasteur Institute. A genus of bacteria called Borrelia is named after him, as is borreliosis (ie, Lyme disease).
Moreover, "Borrel bodies", which are tiny virus-containing granules that cluster to form "Bollinger bodies", are found in tissue cells of fowlpox. (Bollinger bodies are named after German pathologist Otto Bollinger ).
During World War I, Borrel developed one of the earliest known gas masks.
In 1900 Borrel became a member of the Société de biologie.