antiviral

(ant″i-vi′răl )

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[ anti- + viral ]

1. Opposing the action of a virus.
2. A drug used to treat viral infections. Examples of antiviral drugs include acyclovir or famciclovir (for herpes simplex virus infections), oseltamavir (for influenza virus infection), sofosbuvir (for hepatitis C viral infection), and emtricitabine or tenofovir (for HIV infection).

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