Question

Put the following steps of Koch's postulates in order:

A. The suspected infectious agent must be isolated and grown outside the host.
B. The suspected infectious agent causes the disease when it is introduced to a healthy, experimental host.
C. The suspected infectious agent must be found in every case of the disease.
D. The suspected infectious agent must be found in the diseased experimental host.

Answer 1

Koch's postulate correct order is - C, A, B, D.

Explanation:

Koch's postulates are given by Robert Koch a german bacteriologist and physician to form criteria to identify that if a particular is able to cause a disease or epidemic or not. It helped in bringing scientific clarity to this field.

The suspected infectious agent must be found in every case of the disease.

The suspected infectious agent must be isolated and grown outside the host.

The suspected infectious agent causes the disease when it is introduced to a healthy, experimental host.

The suspected infectious agent must be found in the diseased experimental host.

Thus, the correct order is - C, A, B, D.