Pandemrix also found to raise narcolepsy risk in previous European studies.
A British study finds that children and teens who were vaccinated during the 2009 swine flu outbreak are at increased risk for narcolepsy, a disorder that causes people to fall asleep during the day.
The particular flu vaccine involved has never been licensed for use in the United States, according a statement on the U.S. Centers for Disease Control and Prevention website.
Researchers looked at data from children and teens aged 4 ...
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