DEERFIELD, Ill.--(BUSINESS WIRE)--Baxter International Inc. (NYSE: BAX) today confirmed that the European Commission (EC) has granted marketing authorization for CELVAPAN H1N1 pandemic vaccine using Baxter’s Vero cell technology. CELVAPAN H1N1 is the first cell culture-based and non-adjuvanted pandemic influenza vaccine to receive marketing authorization in the European Union.