Chapter 11, Problem 20Q

Summary Introduction

To explain:

Possible reasons for the non-occurrence of the diseases in an animal model when the aerosol form of the bacterium is administered.

Concept introduction:

In this particular case, Koch’s postulates are being performed on sputum specimen which is taken from patients with the unexplained respiratory illness. An abundance of a specific kind of colony is observed on agar cultures. However, if the bacteria are administered in the aerosol form in a model organism, it does not cause disease.