The Epidemiology of Interpandemic and Pandemic Influenza in Vietnam, 2007-2010 The Ha Nam Household Cohort Study I
Peter Horby, Quynh Mai Le, Annette Fox, Quang Thai Pham, Thi Thu Yen Nguyen, Thi Thanh Le, Le Khanh Hang Nguyen, Nhu Duong Tran, Dinh Thoang Dang, Jeremy Farrar, Marcel Wolbers, Tran Hien Nguyen
American Journal of Epidemiology | OXFORD UNIV PRESS INC | Published : 2012
Prospective community-based studies have provided fundamental insights into the epidemiology of influenza in temperate regions, but few comparable studies have been undertaken in the tropics. The authors conducted prospective influenza surveillance and intermittent seroprevalence surveys in a household-based cohort in Vietnam between December 2007 and April 2010, resulting in 1,793 person-seasons of influenza surveillance. Age- and sex-standardized estimates of the risk of acquiring any influenza infection per season in persons 5 years of age or older were 21.1% (95% confidence interval: 17.4, 24.7) in season 1, 26.4% (95% confidence interval: 22.6, 30.2) in season 2, and 17.0% (95% confiden..View full abstract
Awarded by United Kingdom Wellcome Trust
This work was supported by the United Kingdom Wellcome Trust (grants 081613/Z/06/Z and 077078/Z/05/Z).