Medical Dictionary
Main Entry:
bacillus Cal·mette–Gué·rin Pronunciation:
-"kal-'met-(")gA-'ran, -'ran Function:
noun : an attenuatedstrain of tubercle bacillus developed by repeated culture on a medium containing bile and used in preparation of tuberculosis vaccines called also
bacille Calmette-Guérin; —compare
BCG VACCINE Calámette, /kol-met/ Albert Léon Charles (1863–1933), Frenchbacteriologist, and
Guéárin, /gA-ran/ Camille (1872–1961), French veterinarian. A pupil of Louis Pasteur, Calmette founded in 1891 the PasteurInstitute in Saigon, in what is now Vietnam, where he discovered an antivenin snake venom serum. In 1908 his discovery that virulent bovine tubercle bacilli became less virulent after being cultured ina bile-containing medium led to his development in 1927 with Camille Guérin of a tuberculosis vaccine from a strain of tubercle bacillus now known as bacillus Calmette-Guérin. The acronymof the name of the bacillus forms part of the name of their discovery, BCG vaccine, which is widely used in the vaccination of children against tuberculosis.