RAVs (resistant associated variants)

Resistant Associated Variants (RAVs) are specific changes or mutations in a virus's genetic code that make it less responsive or resistant to certain medications, particularly antiviral drugs. In the context of HIV or hepatitis C, these variants can develop when the virus mutates to evade the effects of treatment. Identifying RAVs helps doctors choose the most effective therapy and avoid medications that the virus might resist, improving management of the infection. In essence, RAVs are genetic clues that indicate how a virus might respond to treatment.