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Ir Med J. 2017 Oct 10;110(9):630.

Decrease in the Uptake of Seasonal Influenza Vaccine in Persons Aged 65 Years and Older In Ireland since the 2009 Influenza A (H1N1) Pdm09 Pandemic.

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European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control, (ECDC), Solna, Sweden.
Health Protection Surveillance Centre, Dublin, Ireland.
Institute of Health Carlos III, Spain.


In Ireland, there is year-on-year variation in the seasonal influenza vaccine uptake for people aged 65 years and older. We obtained aggregate vaccine uptake data (2004/05-2014/15) by area and age group and applied the 2011 relative deprivation score and GP-density by area. Using Poisson regression model, we estimated the associations between those variables and uptake before and after the 2009 pandemic. After adjusting for age, deprivation status and GP-density, overall persons aged ?65 years were less likely to receive the vaccine after the pandemic compared to before (RR=0.89, 95%CI: 0.82-0.96). Uptake increased with age; both those in the 70-74 and ?75 year age groups were more likely to receive the vaccine compared to those aged 65-69 years (RR=1.18, 95%CI:1.14-1.24; RR=1.34, 95%CI:1.28-1.39 respectively). Qualitative studies should be undertaken to explore whether changes in public perception on risks of the disease and the vaccine and/or public funding and policy influenced the uptake.


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