Chapter 13, Problem 1VC

Summary Introduction

To indicate:

The point where a vaccination might be most effective and also the point where natural infection would play a role.

Concept introduction:

A biological preparation that provides “active acquired immunity” for a particular disease is known as vaccine. The agents present in typical vaccine resemble the microorganisms that cause disease and often made from a dead or weak microbe, its surface protein or toxins. The vaccine stimulates the immunity of the body and prepares the body for future attacks with the same antigen.