While history says the earliest recorded influenza epidemic was in 1500; we have heard of epidemics throughout history: from the 1918 Spanish flu to the current 2020 COVID-19 pandemic. This book discusses the "killer" viruses in terms of their transmission, control, and prevention. Current research has also been presented to add practicality and relevance. This is one concise book that presents data on the go to get an idea of the major epidemics and the viruses behind them.