http://www.ck12.org Chapter 1. Human Biology
prepares your body for fighting the pathogen without causing the actual illness. Diseases you have probably been
vaccinated against include measles, mumps, and chicken pox.
Vocabulary
- immunity: Ability to resist a particular pathogen.
- vaccination: Process of deliberately exposing a person to a pathogen in order to develop immunity.
Summary
- Immunity is the ability to resist a particular pathogen.
- Vaccination is deliberate exposure to a pathogen in order to bring about immunity.
Practice
Use the resource below to answer the questions that follow.
- What Is Immunity?at http://www.youtube.com/watch?v=vCBfiQnyiKw (1:23)
MEDIA
Click image to the left for more content.- How do vaccines provide immunity? How is the immune response initiated by vaccines similar to the body’s
natural immune response? - Why do some people decide to take vaccines rather than letting the body develop natural immunity?
Review
- Define immunity.
- If you have been vaccinated against measles, you are unlikely to ever have the disease, even if you are exposed
to the measles virus. How does this work?