The word "antiviral" refers to something that helps fight against viruses. It could be a medicine or treatment that helps to prevent or treat viral infections. Full definition
CDC's MMWR dispatch advises use of antiviral drugs for any pregnant woman with confirmed disease. (sciencemag.org)
Napolitano said the US government would release a quarter of the 50 million courses of antiviral drugs in the national stockpile. (newscientist.com)
Each virus contained genetic sequences coding for one of two proteins: miR24, a cancer - fighting antibody, or human interferon beta - 1a, a protein with antiviral properties. (sciencemag.org)