"Sniff. Sniff. Oh, excube me. I feel tewwible. You know, sore thwoad, wuddy dose and that achy, tiwed feeling. Fighdig off cold gerbs is no fud at all. Achoo! Probe into the secrets of sickness and sniff out what germs are, why they sometimes make you ill, how your body battles them, how vaccination protects you from them and so much more. Open these pages and explore the feverish world of germs - you'll find it's nothing to sneeze at!" --