Prevalence and Distribution of Avian Influenza A(H5N1) Virus Clade Variants in Live Bird Markets of Vietnam, 2011-2013 by Nguyen, D, Bryant, J, Davis, C, Nguyen, L, Pham, LT, Loth, L, Inui, K, Nguyen, T, Jang, Y, To, T, Nguyen, T, Hoang, D, Do, H, Nguyen, T, Newman, S, Siembieda, J, Pham, D