Germs are everywhere--in your mouth, on your clothes, on everything you touch. Some we can't live without; others are microscopic killing machines. This series looks at the fascinating struggle to understand and control the spread of mankind's deadliest plagues. From the Black Death of the 14th century to today's fight to control avian flu, readers will come to understand the challenges faced by today's biologists. They will also learn about the science of microbes, and about the doctors who developed vaccines that save millions of lives around the world today. ABDO & Daughters is an imprint of ABDO Publishing Company.