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Case Reports in Rheumatology
Volume 2012 (2012), Article ID 836930, 3 pages
Case Report

Polymyositis following Pandemic Influenza A (H1N1) and 2009-10 Seasonal Trivalent Vaccines

1Rheumatology Unit, Azienda Policlinico-Universitaria Policlinico di Modena, Via del Pozzo 71, 41124 Modena, Italy
2Rheumatology Unit, Department of Internal Medicine, University of Modena and Reggio Emilia and Azienda Ospedaliero-Universitaria Policlinico di Modena, Via del Pozzo 71, 41124 Modena, Italy
3Critical Care Unit, Azienda Ospedaliero-Universitaria Policlinico di Modena, Modena, Italy

Received 21 May 2012; Accepted 19 June 2012

Academic Editors: G. S. Alarcon, H. Alexanderson, J. C. Nossent, and M. Salazar-Paramo

Copyright © 2012 Clodoveo Ferri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Sporadic associations between inflammatory myopathies with vaccinations were described in the literature, raising the possible trigger value of vaccines in the development of these autoimmune disorders. Here, we reported the clinical history of 3 patients who developed polymyositis complicated by interstitial lung disease (2 cases) and dermatomyositis (1 case), after influenza A (H1N1) vaccination.