Therefore, in 2008, the International Federation of Pharmaceutical Manufacturers and Associations Influenza Vaccine Supply task force (IFPMA

IVS) developed a survey methodology to assess influenza vaccine dose distribution globally [7]. The survey requested information from its members on the supply of seasonal trivalent influenza vaccine doses to all WHO Member States. The supply period was defined by calendar year rather than influenza season to ensure that both Northern and Southern influenza seasons were captured. To ensure compliance with competition regulations, the survey results were collected and aggregated by an independent third-party legal counsel. Global distribution of vaccines can be used as a buy MK-1775 proxy for vaccination coverage, survey results on dose distribution of influenza vaccines in 141 countries for 2004 to 2007 were reported in 2008 [7]. Updated and expanded results for 157 countries between 2004 and 2009 were reported in 2011 [8]. The aim of this paper is to update the results of the previous surveys and to show the evolution of the absolute number of influenza vaccine doses distributed between 2004 and 2011 inclusive, and the evolution in the per

capita doses distributed between 2008 and 2011. Tanespimycin Member companies of the IFPMA IVS (Abbott Biologicals, Baxter, Biken, Crucell, bioCSL, Denka Seiken, GlaxoSmithKline Biologicals, Green Cross, Kaketsuken, Kitasato Institute, MedImmune, Novartis Vaccines, sanofi pasteur, Sanofi Pasteur MSD and Sinovac), which collectively

manufacture and supply the vast majority of the world’s seasonal and pandemic influenza vaccines, were requested to provide information on the supply of seasonal trivalent influenza vaccine doses to all WHO Member States during 2010 and 2011. To ensure compliance with anti-trust regulations, the survey results were confidentially collected and aggregated by the IFPMA Secretariat. The resulting anonymized database was then combined with the results Ketanserin of the previous IFPMA IVS survey (2004–2009) [4], which had been compiled using a similar methodology. Doses distributed by country and by year were aggregated and then, to facilitate comparisons, were categorized by distribution to WHO region. To assess vaccine dose distribution in relation to each country’s population size, the study utilized population data from the United Nations’ (UN) statistics database [9]. Doses distributed to each country were expressed per 1000 population in 2008 and per 1000 population 2011 using the corresponding population figures from the United Nations’ (UN) statistics database. To facilitate comparisons, countries were then categorized by WHO region. T-test comparisons were performed between rates of dose distribution/1000 population in 2008 and 2011 by WHO region.