Bacteriologists

Alexander Fleming was a Scottish microbiologist and physician. He is credited with discovering penicillin, the world's first effective antibiotic substance; a discovery that changed the course of history. He also discovered lysozyme, an antimicrobial enzyme which forms part of the innate immune system. In 1999, Fleming was named in Time magazine's 100 Most Important People of the 20th century list.

Robert Koch was a German microbiologist and physician. One of the prominent co-founders of modern bacteriology, Koch is credited with creating and improving laboratory techniques and technologies in the field of microbiology. He is also credited with making important discoveries in public health. In 1905, Robert Koch won the Nobel Prize in Physiology or Medicine for his research on tuberculosis.

Hans Christian Gram was a Danish bacteriologist best remembered for developing a technique called Gram stain, which is still used today to classify bacteria. He achieved international recognition after developing the Gram stain technique. Hans Christian Gram also served as a professor at the University of Copenhagen.

Charles Scott Sherrington was an English histologist, neurophysiologist, pathologist, and bacteriologist. In 1932, Sherrington and Edgar Douglas Adrian were awarded the Nobel Prize in Physiology or Medicine for their discoveries of the functions of neurons. Charles Scott Sherrington's exposition of synaptic communication between neurons helped understand the central nervous system. He was also the recipient of the prestigious Royal Medal.

Alexandre Yersin was a physician and bacteriologist. He is credited with co-discovering Yersinia pestis, the bacillus that causes the bubonic plague. Also an agriculturist, Yersin pioneered the cultivation of rubber trees. He is revered by the Vietnamese people because of his association with Hanoi Medical University; a private university in Da Lat is named in his honor.

Nobel Prize-winning German pathologist and bacteriologist Gerhard Domagk is best remembered for his pathbreaking discovery of Prontosil, the first sulfonamide antibiotic. The Nazis, however, didn’t allow him to accept the Nobel Prize immediately and detained him briefly instead. He had also served as a soldier in World War I.

Nobel Prize-winning biologist Alfred Day Hershey is best remembered for his research on bacteriophages, or viruses that infect bacteria. He was associated with the Washington University throughout most of his life. He is also known for his blender experiment, which he conducted with his work partner Martha Chase.

Ferdinand Cohn was a German biologist who is credited with co-founding microbiology and modern bacteriology. Apart from publishing more than 150 research reports, Cohn also made significant contributions to the field of botany. He was also the first person to classify algae as plants. Ferdinand Cohn received the prestigious Leeuwenhoek Medal in 1885.

Nobel Prize-winning Dutch physician and pathologist Christiaan Eijkman was the first to prove that poor diet is the cause of the disease beriberi, which in turn led to the discovery of vitamins. While he initially worked in the Dutch East Indies, he later collaborated with Robert Koch in his Berlin laboratory.

Carlos Chagas was a Brazilian sanitary physician and bacteriologist. Also a clinician and researcher, he discovered Chagas disease, also called American trypanosomiasis, in 1909. He was working at the Oswaldo Cruz Institute in Rio de Janeiro at that time. He was also the first to discover the parasitic fungal genus Pneumocystis. He founded a nursing school as well. 

Best remembered for his fight against American trypanosomiasis, Salvador Mazza had to face governmental apathy as well as active resistance from powerful quarters while carrying on his research. Yet, he continued with his mission, setting up his first laboratory in a railway car in Argentina’s underdeveloped north, eventually forcing the South American medical community to accept the validity of trypanosomiasis.  

Watson Cheyne was a Scottish bacteriologist and surgeon best remembered for pioneering the implementation of antiseptic surgical methods in the UK. Cheyne is also known for his association with King's College Hospital, where he served as a surgeon from 1880 to 1917. From 1900 to 1901, he served as a consulting surgeon during the Boer War in South Africa.