WHO reviews GSK H1N1 flu shot after narcolepsy link | Reuters
The World Health Organization is reviewing the safety of GlaxoSmithKline's Pandemrix H1N1 flu vaccine after a Finnish study suggested children who got the shot were nine times more likely to suffer from narcolepsy, a rare sleeping disorder.
Narcolepsy causes a person to fall asleep suddenly and unexpectedly. Its precise cause is unknown but it is generally considered to be triggered by a combination of genetic and environmental factors.
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