The impact of repeated vaccination on influenza vaccine effectiveness: a systematic review and meta-analysis

BMC Medicine
http://www.biomedcentral.com/bmcmed/content
(Accessed 26 August 2017)

Research article
The impact of repeated vaccination on influenza vaccine effectiveness: a systematic review and meta-analysis
From the patient perspective, our results support current season vaccination regardless of prior season vaccination. We found no overall evidence that prior season vaccination negatively impacts current season VE. It is important that future VE studies include vaccination history over multiple seasons in order to evaluate repeated vaccination in more detail.
Lauren C. Ramsay, Sarah A. Buchan, Robert G. Stirling, Benjamin J. Cowling, Shuo Feng, Jeffrey C. Kwong and Bryna F. Warshawsky
BMC Medicine 2017 15:159
Published on: 21 August 2017