Hoang, Phuong Mai Vu, Trang Hong Ung, Hang Khanh Le Nguyen, Thuy Thanh Nguyen, Thanh Thi Le, Son Vu Nguyen, Anh Phuong Nguyen, Huong Thi Thu Tran, Cuong Duc Vuong, and Mai Quynh Le. “Missed Detections of Influenza A(H1)pdm09 by Real-Time RT–PCR Assay Due to Haemagglutinin Sequence Mutation, December 2017 to March 2018, Northern Viet Nam”. Western Pacific Surveillance and Response 10, no. 1 (April 2, 2019). Accessed November 23, 2024. https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/654.