<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: Efficacy And Safety Of Pan-Genotypic Sofosbuvir And Velpatasvir In Patients With Hepatitis C Reinfection Following Attainment Of Sustained Virological Response With Ns5A Inhibitors[/INST] Yes</s>