| − | Viruses are not targeted by [[antibiotics]], the drugs used to kill [[bacteria]], and so use of antibiotics for viral infections is usually inappropriate. | + | Viruses are not targeted by [[antibiotics]], the drugs used to kill [[bacteria]], and so use of antibiotics for viral infections is usually inappropriate. There are, however, many antiviral drugs used in cases of viral infection; most notably acyclovir, interferon, and ribavarin. |