CAS PS 211 Lecture Notes - Lecture 20: Lyme Disease, Microbiological Culture
15 Sep 2016
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Infectious disease: disease is any change, other than injury, that disrupts the normal body functions of the body a. i. Some diseases such as hemophilia, are inherited a. i. 1. Others are caused by materials in the environment, such as cigarette smoke. Still others are produced by agents such as bacteria, viruses, and fungi a. ii. Disease causing agents are called pathogens: the germ theory of disease b. i. Diseases are caused by microorganisms, or germs b. ii. Diseases can be inherited caused by materials in the environment, or produced by pathogens: koch s postulates c. i. Guidelines to identify microorganisms that cause disease c. ii. The pathogen should always be found in the body of a sick organism and should not be found in a healthy one c. iii. The pathogen must be isolated and grown in the laboratory in pure culture c. iv. When the purified pathogens are placed in a new host, they should cause the same disease that infected the original host c. v.
