Baxter granted authorization by European Commission for use of HyQvia Baxter International (BAX) and Halozyme Therapeutics (HALO) announced that the European Commission has granted Baxter marketing authorization in all European Union Member States for the use of HyQvia as replacement therapy for adult patients with primary and secondary immunodeficiencies. Baxter will introduce HyQvia in select countries during 2013 and plans to expand the launch to other EU countries in 2014.