Priorix, a vaccine developed by GlaxoSmithKline Plc, has been approved by the US Food and Drug Administration for active immunisation for the prevention of measles, mumps and rubella (MMR) infection in individuals 12 months of age and older. The vaccine is currently licensed in more than 100 countries, including the nations of Europe, Canada, Australia and New Zealand but until now, has not been available in the US.
