Koch's Postulates
Four criteria that were established by Robert Koch to identify the causative agent of a particular disease, these include:
- the microorganism or other pathogen must be present in all cases of the disease
- the pathogen can be isolated from the diseased host and grown in pure culture
- the pathogen from the pure culture must cause the disease when inoculated into a healthy, susceptible laboratory animal
- the pathogen must be reisolated from the new host and shown to be the same as the originally inoculated pathogen
Copyright © 2000, D.M. Rollins and S.W. Joseph
Revised: September 2003
URL: http://life.umd.edu/
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