In Britain a doctor was banned from practising after falsely claiming that the triplevaccine used against measles, mumps and rubella might cause autism.
Mr Blair told MPs the triplevaccine had been cleared by independent bodies including the British Medical Association and was in use in 90 countries around the world.
Then there was the refusal of the prime minister of the time, Tony Blair, to state whether his son Leo had received the triplevaccine - on the grounds that this would invade their child's right to privacy - which added to the controversy.