GlaxoSmithKline (LSE/NYSE:GSK) and its partner Vir Biotechnology (NSDQ:VIR) have received marketing authorization from the European Commission for the dual-action monoclonal antibody Xevudy (sotrovimab). The marketing authorization covers individuals 12 and older who weigh at least 40 kg who do not need supplemental oxygen. It also requires that such individuals have a heightened risk of developing…