ABSTRACT
Robert Koch (1843–1910) was a German microbiologist and scientist. He isolated the microorganisms that cause anthrax, tuberculosis and cholera. He set out four postulates on the causation of infectious disease, which remain the gold standard for the detection of the cause of any disease. His ground-breaking research attracted students from around the world who came to his centres to learn. He was keen to share his discoveries with the world and share credit with his co-researchers. One of his assistants was called Petri.
