AdvertisementFDA's Approval Of A Cheaper Drug For Hepatitis C Will Likely Expand TreatmentOctober 04, 2017Michelle AndrewsfacebookEmailHepatitis C virus, via transmission electron microscopy. (The actual viral diameter is around 22 nm.) Doctors say the recent FDA approval of Mavyret, a less expensive drug for treating the virus, may make it easier for more insurers and correctional facilities to expand treatment. (Science Source)