Chapter 9, Problem 10CR

Summary Introduction

To review

The mechanism by which a vaccine provides an immunity from a specific disease.

Introduction:

The process of activating the body’s immune system in advance is known as active immunization. Active immunization usually involves administering an antigen-containing preparation called a vaccine. Most of the vaccines are produced from attenuated (dead) or weakened pathogens. An example is the oral polio vaccine (the Sabin vaccine), made from weakened poliovirus.