The ruling from the European Medicines Agency (EMEA) makes Prepandrix, which targets the H5N1 virus, the first vaccine to receive a licence for pre-pandemic use in all 27-member European Union states.
AAP reports Glaxo already has orders from Switzerland and the United States for the vaccine that it has spent some $US2 billion ($A2.1 billion) developing, based on the bird flu virus from Vietnam.
Switzerland has ordered eight million doses - enough to cover the country's entire population. The US Department of Health and Human Services has ordered 27.5 million doses.