A team of scientists have associated an influenza vaccination - Pandemrix - to an increased risk of narcolepsy in young adults.

While the team did not identify any link to a large number of immune-related or neurological diseases, they did confirm an increased risk in diagnosis of narcolepsy in individuals younger than 20 years of age, and observed a trend towards an increased risk amongst young adults between 21 and 30.
Dr. I. Persson from the Karolinska Institutet, Stockholm, said that the follow-up of Pandemrix vaccinations in a large registry based study in Sweden confirms an increased risk of narcolepsy in children and adolescents, while also providing reassuring results for a large number of other neurological and immune related diseases.
Source-ANI