Question

Postulates to establish a causal relationship between a specific microorganism and a specific disease were laid down by
a. Jacob Henle
b. Theodore Schwann
c. Felix Pouchet
d. Robert Koch

Answer 1

Postulates to establish a causal relationship between a specific microorganism and a specific disease were laid down by Option D i.e. Robert Koch.

They are a set of 4 criteria designed to establish relation between a microorganism and a disease.

Koch's postulates are the following:

The microorganism must be found in abundance in all organisms suffering from the disease, but should not be found in healthy organisms.

The microorganism must be isolated from a diseased organism and grown in pure culture.

The cultured microorganism should cause disease when introduced into a healthy organism.

The microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent.