Bloods taken from over 1,600 Britons after swing flu outbreak revealed that over 44 per cent tested positive for the H1N1 flu virus.
While some of these had been vaccinated or had caught a similar infection many years earlier, most had caught swine flu, say the Edinburgh University researchers.
The research by Edinburgh University suggest that 20 times more people has the swine flu virus than had been thought, many of had such mind symptoms that they did not even realise the had it.
The study of the bloods taken from people living in Scotland revealed that half of those given the jabmay have already been infected with swine flu and there for were immune to the disease. This suggests that many may have been given the vaccine needlessly – wasting valuable resources and money for the NHS and medical practices around the country.