Our bodies can often prevent us from catching the same illness twice, and vaccines use that bodily system to prevent us from getting sick in the first place. Learn how the immune response works, what goes into vaccines, and why vaccines are safe for kids in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/wellness/preventive-care/vaccine.htm

See omnystudio.com/listener for privacy information.