Drawing on the latest science and his team's own pioneering research, Professor Tim Spector explores the hidden world of the microbiome, and demystifies the common misconceptions about fat, calories, vitamins and nutrients.

When one young germ finds himself in the germ academy, he finds out that infecting is not really for him. Try as he might, he just can't work up the enthusiasm for sickness that his classmates - Snot, Rash, Pus and Scab - so obviously feel for the task. When he is sent to ruin Myrtle's birthday party, things don't go as planned.