In the fifth Mysterious You book, Achoo!, kids probe the secrets of illness and sniff out what germs are, why they sometimes make us sick, how our bodies battle them and how vaccines protect us against them. This unique series explores the mysteries of the human body using a mix of thoroughly researched factual information, amazing anecdotes and surprising try-it activities.

In the fifth Mysterious You book, Achoo!, kids probe the secrets of illness and sniff out what germs are, why they sometimes make us sick, how our bodies battle them and how vaccines protect us against them. This unique series explores the mysteries of the human body using a mix of thoroughly researched factual information, amazing anecdotes and surprising try-it activities.