After 09 swine flu pandemic, about one in 15,000 children in Europe who received the H1N1 vaccine called Pandemrix developed narcolepsy, a disorder that causes uncontrollable sleepiness. A leading explanation for the rash of cases of narcolepsy is a fragment of the H1N1 virus used to produce Pandemrix may have triggered an autoimmune reaction in some vulnerable children. Researchers have struggled to find evidence of this hypothesis, however. This week, the picture grew murkier when Stanford University researchers retracted a paper in Science Translational Medicine , published December 18, 2013, which was hailed as the first evidence to support the immune hypothesis. After several attempts, the scientists say they are unable to replicate a key part of the experience.
For more, see the full article in this week's issue of Science .
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