What kind of harm can a little mouse do? Rodents can cause many diseases such as the Hantavirus Pulmonary Syndrome (HPS). This disease affects the lungs and can cause death. HPS is caused by rodents such as the cotton rat, the white-footed mouse, and the deer mouse, which is the most common. This lung disease is transmitted from rodents to humans through excretions, but is also easily airborne. This virus can be passed to humans through rodent bites, eating contaminated food, or through broken skin. Once a person encounters this virus, it may take one to three weeks before any symptoms appear. The person develops symptoms that are like the flu. The disease can be diagnosed through blood tests. A person who is infected with HPS must be treated as soon as possible. There are five stages to the infection, with each one being more critical. The lungs fill with fluid, but this disease can also affect other organs. Through this book, readers will learn more about HPS. They will find out where it originates, how it is transmitted, how it is treated, how this disease has affected people, and how it can be prevented. There is a glossary to help the reader understand medical terminology. This interesting book would be beneficial in a science or nursing class. This book is part of the "Deadly Diseases and Epidemics" series.