Experienced scientists describe-in an easily-followed format-their state-of-the-art techniques for evaluating antiviral compounds. The assays described include systems for investigating drugs used against herpesviruses, hepatitis viruses, human immunodeficiency viruses, human papillomaviruses, and influenza viruses. These well-tested methods range from cellular assays to some of the most up-to-date molecular approaches for identifying compounds that are active against viral enzymes and the development of viral resistance against drugs currently in use. Timely and comprehensive, Antiviral Methods and Protocols offers today's researchers in academia, clinical departments, and the pharmaceutical industry the powerful, reproducible, and novel methods needed to evaluate compounds effective against both acute and chronic infections.