Effectiveness of influenza vaccine in preventing medically-attended influenza virus infection in primary care, Israel, influenza seasons 2014/15 and 2015/16 Yaron-Yakoby, Hamutal and Sefty, Hanna and Pando, Rakefet and Dichtiar, Rita and Katz, Mark A and Stein, Yaniv and Mandelboim, Michal and Mendelson, Ella and Shohat, Tamy and Glatman-Freedman, Aharona and the Israeli Influenza Surveillance Network (IISN), Eurosurveillance, 23, 17-00026 (2018), https://doi.org/10.2807/1560-7917.ES.2018.23.7.17-00026