Which of the following is not one of Koch's postulates?
a. The same pathogen must be present in every case of the disease.
b. The pathogen must be isolated and grown in pure culture from the diseased host.
c. The pathogen from pure culture must cause the disease when inoculated into a healthy, susceptible laboratory animal.
d. The disease must be transmitted from a diseased animal to a healthy, susceptible animal by direct contact.
e. The pathogen must be isolated in pure culture from an experimentally infected lab animal.

Question

Which of the following is not one of Koch's postulates?

a. The same pathogen must be present in every case of the disease.

b. The pathogen must be isolated and grown in pure culture from the diseased host.

c. The pathogen from pure culture must cause the disease when inoculated into a healthy, susceptible laboratory animal.

d. The disease must be transmitted from a diseased animal to a healthy, susceptible animal by direct contact.

e. The pathogen must be isolated in pure culture from an experimentally infected lab animal.

Accepted Answer

Hey, everyone. Let's take a look at this question together as per conscious postulates, why is it important to isolate the pathogen from the inoculated animal? Is it answer choice A to determine the susceptibility of the animal to the disease? Answer choice B to analyze the genetic variations of the pathogen. Answer choice C to confirm that the disease is transmissible from animals to humans or answer choice D to ensure congruence between isolated pathogen and disease causing organisms. Let's work this problem out together to try to figure out which of the following answer choices explains why it is important to isolate the pathogen from the inoculated animal as per Koch's postulates. So in order to solve this question, we have to recall what we have learned about Koch's postulates and why it would be important to isolate the pathogen from the inoculated animal. And we can recall that Koch's research provides a framework for the study of the etiology of any infectious disease. And in this case, isolating the pathogen from the inoculated animal is crucial because it allows researchers to confirm the pathogen obtained matches the original organism. So as pero postulates, it is important to isolate the pathogen from the inoculated animal as it allows researchers to confirm that the pathogen that was obtained from that inoculated animal matches the original organism. So looking at our answer choices, we can see that answer choice D is the correct answer. As Percos postulates, it is important to isolate the pathogen from the inoculated animal to ensure congruence between the isolated pathogen and the disease causing organism. So answer choice D is the only correct answer choice. I hope you found this video to be helpful. Thank you and goodbye.

Verified Solution

Key Concepts

Koch's Postulates

Pathogen Isolation

Experimental Infection