Acta Neurol Scand 2012 Nov 10;126(5):e25-8. Epub 2012 May 10.
Department of Neurology, Oulu University Hospital, Oulu, Finland.
Background: The outbreak of influenza A (H1N1) pandemic during the year 2009 led to the development of several vaccinations against H1N1 virus. In Finland, 2.6 million citizens were vaccinated during pandemic 2009 - 2010 with adjuvanted influenza vaccine, Pandemrix(®) .
Clinical Presentation: In this case report, we describe a patient with non-paraneoplastic Lambert-Eaton myasthenic syndrome following Pandemrix(®) vaccination.
Conclusion: Development of various autoimmune diseases in genetically predisposed subjects following exposure to certain environmental factors, including vaccinations, is a well-known entity. Clinicians should be aware of the possibility of the induction of autoimmune diseases following vaccinations and actively ask the relevant clinical history in a newly diagnosed patient with an autoimmune disorder.