Although influenza, commonly known as the flu, is a familiar disease to many people, its effects can be deadly. The virus holds the record for having the highest death rate in a two-year period of any disease (1918-1919), is highly potent, and is difficult to research because it is constantly mutating. "Influenza, Second Edition" examines symptoms and complications of the disease, as well as treatment, prevention, and the need for flu vaccines. This revised edition provides new illustrations and up-to-date information, including a look at recent outbreaks of avian flu, rapid diagnostic testing, universal flu vaccine, and the completion of sequencing more than 2,000 influenza virus genomes. The chapters include, Deadly World Traveler, Viral Replication, 'I've Got the Flu, What Can I Do?',Influenza - Nature's Frequent Flyer: Prevention, Dealing with Complications, and What May the Future Bring?