7°c Clear
19°c Sunny
Health Day - ONLINE EDITION
H1N1 Swine Flu Vaccine Tied to Sleep Disorder in British Children
Pandemrix also found to raise narcolepsy risk in previous European studies
Pandemrix also found to raise narcolepsy risk in previous European studies.
TUESDAY, Feb. 26 (HealthDay News) -- 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 to 18 who were treated at sleep centers and neurology centers in England, and concluded that receiving the Pandemrix vaccine was associated with a 14- to 16-fold increased risk of developing narcolepsy.
They also determined that one in 52,000 to 57,500 doses of the vaccine are associated with narcolepsy, according to the study published online Feb. 26 in the journal BMJ.
The findings are consistent with previous studies in other countries, said Elizabeth Miller, of the Health Protection Agency in the United Kingdom, and colleagues. For example, a 2012 study from Finland found a 13-fold increased risk of narcolepsy in children and teens aged 4 to 19 who received the Pandemrix vaccine.
The authors of the new study wrote that the findings do indicate a "causal" link between the vaccine and the sleep disorder. They added, however, that the risk may still be overestimated and added that long-term monitoring of children and teens who received the vaccine is needed to determine the exact level of risk.
The 2009 H1N1 swine flu pandemic sickened millions of people and caused more than 18,000 deaths in more than 200 countries. In England, the Pandemrix vaccine was introduced in October 2009. By March 2010, 24 percent of healthy children younger than age 5 and 37 percent of those aged 2 to 15 in an at-risk group had been vaccinated.
More information
The U.S. National Institute of Neurological Disorders and Stroke has more about narcolepsy.
Fact Check
Have you found an error, or know of something we’ve missed in one of our stories? Please use the form below and let us know.
More Your Health
- Back to Top
- Return to Your Health
More Your Health
(1 of 50 articles for this week)
Portland, Ore., mayor concedes that residents have rejected water fluoridation
1:31 AM 0PORTLAND, Ore. - The mayor of Portland, Ore., has conceded defeat in an effort to add fluoride to the city's ...
Poll
Ads by Google
You can comment on most stories on winnipegfreepress.com. You can also agree or disagree with other comments. All you need to do is register and/or login and you can join the conversation and give your feedback.
Have Your Say
New to commenting? Check out our Frequently Asked Questions.
The Winnipeg Free Press does not necessarily endorse any of the views posted. By submitting your comment, you agree to our Terms and Conditions. These terms were revised effective April 16, 2010.