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National influenza surveillance in Vietnam, 2006–2007

2009; Elsevier BV; Volume: 28; Issue: 2 Linguagem: Inglês

10.1016/j.vaccine.2009.09.139

1873-2518

Hien Thi Nguyen, Nila J. Dharan, Mai thi Quynh Le, Nguyen B. Nguyen, Nguyen Thanh Chung, Dong Van Hoang, Huu N. Tran, Chien Trong Bui, Dat Tuan Dang, Dinh Ngoc Pham, Hoa T. Nguyen, Tu V. Phan, David T. Dennis, Timothy M. Uyeki, Joshua A. Mott, Yen Thi Hong Nguyen,

Animal Disease Management and Epidemiology

In 2006, national influenza surveillance was implemented in Vietnam. Epidemiologic and demographic data and a throat swab for influenza testing were collected from a subset of outpatients with influenza-like illness (ILI). During January 1, 2006 through December 31, 2007, of 184,521 ILI cases identified at surveillance sites, 11,082 were tested and 2112 (19%) were positive for influenza by reverse transcription polymerase chain reaction. Influenza viruses were detected year-round, and similar peaks in influenza activity were observed in all surveillance regions, coinciding with cooler and rainy periods. Studies are needed to ascertain the disease burden and impact of influenza in Vietnam.