Final answer:
Antiviral drugs inhibit various stages of the viral replication cycle to treat infections effectively.
Explanation:
Antiviral drugs are medications used to treat viral infections by inhibiting viral entry, uncoating, nucleic acid biosynthesis, preventing viral escape from host cells, and release from infected cells. These drugs are different from viricides, which destroy viruses. Amantadine is an antiviral drug that targets the influenza virus by preventing viral escape from endosomes upon host cell uptake, thus blocking viral replication.
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