How do vaccines work?
Assign to Google Classroom You asked us, how do vaccines work? Well, vaccines are basically a stupendously brilliant way to train ourselves to fight some downright nasty, even deadly diseases. Let me explain. When we get sick from viruses or bacteria, our immune system creates weapons that attack the invading germs, but every disease is a little different. So we need to develop unique ammo for each one. And that can take time, which we don't always have. Some infections work fast and furious, never really giving us a chance to defend ourselves. The results can be deadly. The genius of vaccine...
Source: tweentribune.com