His contributions are as follows: * Anthrax * Koch’s four postulates * Isolating pure culture on solid media * Cholera * Tuberculosis
ANTHRAX:
Koch is widely known for his work on this disease. He discovered the causative agent for this disease as Bacillus anthracis.
Koch discovered spore-formation in the anthrax bacteria, which could remain dormant under specific conditions. However, under optimal conditions, he found that the spores were activated and caused disease. To determine this causative agent, he dry-fixed bacterial cultures onto glass slides, used dyes to stain the cultures, and then observed them through a microscope. Koch’s work with anthrax is notable in that he was the first to link a particular microorganism with a given disease, rejecting the idea of spontaneous generation and proving the germ theory of disease.
KOCH’S FOUR POSTULATES:
During his time as government advisor, he published a report in which he stated the importance of pure cultures in