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Flu Basics

Flu Basics

The flu is a contagious disease caused by the influenza type A, B, and C viruses. It spreads through the air, and can produce high fever, headache, sore throat, non-productive and dry cough, muscle aches, some gastrointestinal problems, and extreme tiredness. More than 200,000 persons are hospitalized in the US each year due to flu.

Author(s): Sonia Rahmati Clayton, PhD, and Nancy Moreno, PhD
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Flu: An Introduction

Flu: The virus

Flu: Transmission and Symptoms

Flu: Treatment

Flu: Prevention

What Organisms and Host Cells Do Viruses Infect?