1. Defense Against Disease
An Introduction

2. Epidemiologist is someone who studies the patterns, causes, and effects of health and disease conditions in defined populations

3. Virologist is someone who studies viruses

4. Virulent is an extremely severe or harmful virus

5. Epidemic: a widespread occurrence of an infectious disease in a community at a particular time

6. Ways to Control Epidemics
Monitor for infectious diseases.
Detect & investigate infectious diseases.
Provide disease prevention & control services.
Isolate the source of the epidemic.