Question Detail

MIC 121 MIC 121 Test compilation 2 Objective Question

Question

Which of the following is not true about Koch's postulates?
Options
A The pathogen from the pure culture must cause the disease when inoculated into a healthy, susceptible host
B The specific pathogen must be isolated from diseased host and grown in pure culture
C The pathogen must not be re-isolated from the new host
Correct Answer
D The pathogen must be present in all cases of the disease
Correct Answer

Option C is the correct answer.

Detailed Explanation

One of Koch's postulates states that the same pathogen must be re-isolated from the new diseased experimental host and be shown to be identical to the original specific pathogen. Therefore, stating the pathogen must not be re-isolated is incorrect.

Hint

Recall the complete set of criteria that Koch established to link a specific microorganism to a specific disease.

Question Info