Pandemrix

vaccine

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July 20, 2026

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Pandemrix was a vaccine developed for the 2009 H1N1 influenza pandemic. While it was widely used, with approximately 30 million doses administered in Europe alone, concerns arose regarding its side effects. In 2011, the Pandemrix vaccine was linked to an increased incidence of narcolepsy, a neurological disorder affecting sleep-wake cycles. This link was particularly noted in individuals with a specific genetic predisposition. Despite these concerns, health officials maintained that the benefits of H1N1 vaccination generally outweighed the risks of potential side effects.12

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influenza pandemic (H1N1) of 2009
Treatment and prevention
…was used against H1N1 was Pandemrix, which was developed by GlaxoSmithKline and was approved for use in September 2009 by the European Commission. Pandemrix was used widely, with doses administered in 47 countries worldwide and with some 30 million doses used in Europe alone.
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…was used against H1N1 was Pandemrix, which was developed by GlaxoSmithKline and was approved for use in September 2009 by the European Commission. Pandemrix was used widely, with doses administered in 47 countries worldwide and with some 30 million doses used in Europe alone.
Read More