Learn the fascinating history of vaccination, and describes in simple terms how and why vaccination works.This series takes readers (Ages 8-12) on a historical journey, examining how people coped in the past and how they developed ingenious ways to make life safer and less unpleasant. Each book features full-color cartoon-style illustrations and hilarious speech bubbles to heighten interest, making the series attractive even to reluctant readers. Sticking sharp needles into small children doesn't sound like a nice thing to do. But vaccination is definitely a case of being "cruel to be kind." This simple technique has saved millions from deadly diseases-and in future, with new methods of delivery, we might even be able to do without that needle.