Swedish study adds to data linking GSK vax to narcolepsy

The Swedish regulator has added to evidence linking GlaxoSmithKline's ($GSK) swine flu vaccine to narcolepsy in a registry study of 5.8 million people. A three-fold increased risk of having narcolepsy was seen in vaccinated people under the age of 20. The increase in risk is lower than in some other studies, including a smaller Swedish registry project. Study