LE, Thanh Thi et al. Circulation of influenza B lineages in northern Viet Nam, 2007–2014. Western Pacific Surveillance and Response, Manila, Philippines, v. 6, n. 4, 2015. DOI: 10.5365/wpsar.2015.6.1.022. Disponível em: https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/328. Acesso em: 3 jun. 2026.