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Vaccines 2015, 3(2), 293-319; doi:10.3390/vaccines3020293

Measuring Cellular Immunity to Influenza: Methods of Detection, Applications and Challenges

The Jenner Institute, University of Oxford, ORCRB, Roosevelt Drive, Oxford OX1 7DQ, UK
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Author to whom correspondence should be addressed.
Academic Editor: Sarah Gilbert
Received: 13 February 2015 / Revised: 27 March 2015 / Accepted: 30 March 2015 / Published: 14 April 2015
(This article belongs to the Special Issue Influenza Vaccines)
View Full-Text   |   Download PDF [1053 KB, uploaded 14 April 2015]   |  

Abstract

Influenza A virus is a respiratory pathogen which causes both seasonal epidemics and occasional pandemics; infection continues to be a significant cause of mortality worldwide. Current influenza vaccines principally stimulate humoral immune responses that are largely directed towards the variant surface antigens of influenza. Vaccination can result in an effective, albeit strain-specific antibody response and there is a need for vaccines that can provide superior, long-lasting immunity to influenza. Vaccination approaches targeting conserved viral antigens have the potential to provide broadly cross-reactive, heterosubtypic immunity to diverse influenza viruses. However, the field lacks consensus on the correlates of protection for cellular immunity in reducing severe influenza infection, transmission or disease outcome. Furthermore, unlike serological methods such as the standardized haemagglutination inhibition assay, there remains a large degree of variation in both the types of assays and method of reporting cellular outputs. T-cell directed immunity has long been known to play a role in ameliorating the severity and/or duration of influenza infection, but the precise phenotype, magnitude and longevity of the requisite protective response is unclear. In order to progress the development of universal influenza vaccines, it is critical to standardize assays across sites to facilitate direct comparisons between clinical trials. View Full-Text
Keywords: influenza; cellular immunity; T-cell; immunity influenza; cellular immunity; T-cell; immunity
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. (CC BY 4.0).

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Coughlan, L.; Lambe, T. Measuring Cellular Immunity to Influenza: Methods of Detection, Applications and Challenges. Vaccines 2015, 3, 293-319.

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