Novel Mechanisms of SARS-CoV-2 Drug Resistance and Rational Design of Anti-Resistant Antivirals
Antiviral drug resistance in SARS-CoV-2 is increasingly limiting treatment efficacy. Four recent studies have revealed two key resistance mechanisms: (1) Mutations in the main protease (Mpro)—including E166V, E166A, and S144-series variants—disrupt drug binding or active-site conformation, reducing nirmatrelvir efficac...