WHO Western Pacific Region Global Influenza Surveillance and Response System M of the. Epidemiological and virological characteristics of seasonal influenza in the Western Pacific Region of the World Health Organization, 2011–2015. Western Pac Surveill Response J [Internet]. 2017 Apr. 3 [cited 2024 May 1];8(1). Available from: https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/523