Francesco Redi was an Italian physician and poet. He was the very first scientist to challenge the theories of spontaneous generation by demonstrating that maggots come from eggs of flies.
Antonie Philips van Leeuwenhoek was a Dutch tradesman and scientist. He is commonly known as "the Father of Microbiology", and considered to be the first microbiologist.
Edward Jenner, FRS was an English physician and scientist who was the pioneer of smallpox vaccine, the world's first vaccine.
John Snow was an English physician and a leader in the adoption of anaesthesia and medical hygiene. He is considered one of the fathers of modern epidemiology, in part because of his work in tracing the source of a cholera outbreak in Soho, London, in 1854.
Ignaz Philipp Semmelweis was a Hungarian physician of German extraction now known as an early pioneer of antiseptic procedures.
Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization.
Joseph Lister, 1st Baron Lister, Bt., OM, FRS, PC, known as Sir Joseph Lister, Bt., between 1883 and 1897, was a British surgeon and a pioneer of antiseptic surgery.
Koch was a celebrated German physician and pioneering microbiologist. The founder of modern bacteriology, he is known for his role in identifying the specific causative agents of tuberculosis, cholera, and anthrax and for giving experimental support for the concept of infectious disease. In addition to his trail-blazing studies on these diseases, Koch created and improved laboratory technologies and techniques in the field of microbiology, and made key discoveries in public health.
Sir Alexander Fleming, FRSE, FRS, FRCS was a Scottish biologist, pharmacologist and botanist. He wrote many articles on bacteriology, immunology, and chemotherapy