Vaccines trigger the body's immune responses to harmful viruses or bacteria so that the body can build up a resistance to that virus or bacteria. Learn more about how vaccines work to immunize people against illness.
Watch this video to learn more about Vaccines.
Source: How Do Vaccines Prevent Illness, youtubealator, YouTube
Think about it!
Answer this question in your notes. Why is it important that parents make sure and get their children all their vaccinations?