Jean Hyacinthe Vincent

Jean Hyacinthe Henri Vincent (22 December 1862 – 23 November 1950) was a French physician who was a native of Bordeaux. He was an associate professor at Val-de-Grâce, as well as medical inspector general with the French Army. Later he attained the chair of epidemiology at Collège de France.
Vincent is credited with the discovery of the organisms that cause an acute infection of the oral soft tissues, including the tonsils and pharynx. 
This condition is caused by the combination of the fusiform bacilli ("Bacillus fusiformis"), and the spirochete ("Borrelia vincentii"). Today, this disease is called Vincent's angina in honor of his discovery. It is sometimes referred to as trench mouth or Vincent's gingivitis.
He is also remembered for his work with vaccines, and his successful inoculations of the French Army against typhoid fever and paratyphoid fever, types A and B. He started these vaccinations in 1910, and they were continued during World War I. Marshals Joseph Joffre (1852–1931) and Ferdinand Foch (1851–1929) paid homage to Vincent and his medical work that saved countless lives.