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 title looks at the fascinating struggle to understand and control the spread of one of mankind's deadliest killer, Smallpox. Readers will learn all about Smallpox, from the infection and symptoms to treatment and vaccinations. ABDO & Daughters is an imprint of ABDO Publishing Company.