Question

All of the following are Koch's postulates for disease causation EXCEPT? Group of answer choices

The organism is always found in every case of the disease.

The organism can be isolated from every case of the disease.

The strength of the association in the risk of developing the disease among all exposed individuals.

The organism is not found with any other disease.

Answer 1

Ans. (D) The organism is not found with any other disease.

The Koch's postulates establised 4 criteria to identify the causative agent of a particular disease, those are :

1. The pathogen or microorganisms must be present in all cases of the disease.
2. The microorganisms or pathogen can be isolated from the diseased host and grown in pure culture
3. Pathogen extracted from the host and pure cultured must cause the disease when inoculated into a healthy, susceptible individual.
4. The pathogen when reisolated from the new host will be the same as the originally inoculated pathogen.

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