Question Detail

MIC 121 Mcb compilations Objective Question
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Question

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

Option D is the correct answer.

Detailed Explanation

Koch's postulates include four criteria to establish a causal relationship between a microorganism and a disease. The fourth postulate states that the pathogen must be re-isolated from the inoculated, diseased experimental host and be identical to the original specific pathogen. Therefore, the statement 'The pathogen must not be re-isolated from the new host' is incorrect.

Hint

Remember the final step of verifying the pathogen in the experimentally infected host.

Question Info

Course: MIC 121
Topic: Mcb compilations
Type: Objective
Difficulty: Not specified
Question 809 of 984
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