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Efficacy of vaccination against influenza in patients with multiple sclerosis: The role of concomitant therapies

Paolo Pellegrino, Carla Carnovale, Valentina Perrone, Marco Pozzi, Stefania Antoniazzi, Sonia Radice, Emilio Clementi

Vaccine, Volume 32, Issue 37, 20 August 2014, Pages 4730–4735

Abstract
Multiple sclerosis is a chronic progressive demyelinating disease affecting over 2.1 million patients worldwide. Patients affected by MS are exposed to an increased risk of infection from communicable diseases, which may lead to severe disease relapses. Studies have analysed the issue of vaccination of MS-affected patients. These studies, however, deal mostly with safety-related issues documenting that most vaccines have been proven to be safe in MS patients and that vaccination is not associated with an increased risk of relapses. By contrast, evidence on the efficacy is comparatively scant and not yet systematised in a comprehensive picture. This aspect is however important, as both MS and its treatment alter the immune responses, a situation that may be associated with a reduced vaccine efficacy.

We have now reviewed the literature and assessed the effects of the therapy for MS on vaccine efficacy; we focused on the vaccine against influenza as for the other vaccines the information is still too scant. The majority of drugs appear not associated with a reduced response to vaccination against influenza, with the notable exception of mitoxantrone and glatiramer acetate. For a few drugs, among which natalizumab, information is not sufficiently clear and additional studies are needed to draw a definite conclusion. These results highlight the importance to evaluate the efficacy of vaccination in patients treated with immunosuppressant drugs.

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About the Editors

  • Prof Timothy Vartanian

    Timothy Vartanian, Professor at the Brain and Mind Research Institute and the Department of Neurology, Weill Cornell Medical College, Cornell...
  • Dr Claire S. Riley

    Claire S. Riley, MD is an assistant attending neurologist and assistant professor of neurology in the Neurological Institute, Columbia University,...
  • Dr Rebecca Farber

    Rebecca Farber, MD is an attending neurologist and assistant professor of neurology at the Neurological Institute, Columbia University, in New...

This online Resource Centre has been made possible by a donation from EMD Serono, Inc., a business of Merck KGaA, Darmstadt, Germany.

Note that EMD Serono, Inc., has no editorial control or influence over the content of this Resource Centre. The Resource Centre and all content therein are subject to an independent editorial review.

The Grant for Multiple Sclerosis Innovation
supports promising translational research projects by academic researchers to improve understanding of multiple sclerosis (MS) for the ultimate benefit of patients.  For full information and application details, please click here

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