biostudies-literatureUnknown14(8)Mese SGlaxoSmithKline Biologicals SANational Influenza Reference Laboratory at Istanbul University as part of their routine work. Sağlık Bakanlığı (Turkish Ministry of Health) and the World Health OrganizationHuman influenza is predominantly caused by influenza A virus (IAV) - A/H1N1 and/or A/H3N2 - and influenza B virus (IBV) - B/Victoria and/or B/Yamagata, which co-circulate each season. Influenza surveillance provides important information on seasonal disease burden and circulation, and vaccine content for the following season. To study the circulating influenza subtypes/lineages in western Turkey. Community-based sentinel surveillance results during 2003-2016 (weeks 40-20 each season; but week 21, 2009 through week 20, 2010 during the pandemic) were analyzed. Nasal/nasopharyngeal swabs from patients with influenza-like illness were tested for influenza virus and characterized as A/H1N1, A/H3N2, or IBV. A subset of IBV samples was further characterized as B/Victoria or B/Yamagata. Among 14,4Human vaccines & immunotherapeutics1899-1908https://www.ebi.ac.uk/biostudies/studies/S-EPMC6149844biostudies-literatureInfluenza surveillance in Western Turkey in the era of quadrivalent vaccines: A 2003-2016 retrospective analysis.PMC6149844Ozakay AOzturk SMese SBadur SUyanik AfalseInfluenza surveillance in Western Turkey in the era of quadrivalent vaccines: A 2003-2016 retrospective analysis.Human influenza is predominantly caused by influenza A virus (IAV) - A/H1N1 and/or A/H3N2 - and influenza B virus (IBV) - B/Victoria and/or B/Yamagata, which co-circulate each season. Influenza surveillance provides important information on seasonal disease burden and circulation, and vaccine content for the following season. To study the circulating influenza subtypes/lineages in western Turkey. Community-based sentinel surveillance results during 2003-2016 (weeks 40-20 each season; but week 21, 2009 through week 20, 2010 during the pandemic) were analyzed. Nasal/nasopharyngeal swabs from patients with influenza-like illness were tested for influenza virus and characterized as A/H1N1, A/H3N2, or IBV. A subset of IBV samples was further characterized as B/Victoria or B/Yamagata. Among 14,42018-01-01T00:00:00Z20182025-04-19T13:03:09.445Z2019-03-26T23:57:00ZS-EPMC61498442954356910.1080/21645515.2018.1452577