Developed vaccines to prevent chicken cholera, anthrax, skin disease, and rabies.
Developed the use of gelatin on glass plates as a means for culturing bacteria colonies for experiments. Developed methods of staining, fixing, and photographing bacteria.
Developed an effective cure for syphilis.
Identified the cause of whooping cough which resulted in the development of an improved vaccine.
Discovered transformation in bacteria which paved the way for molecular genetics.
Used the antiseptic properties of Phenol to disinfect and sterilize wounds and surgical instruments.