... (Annual report of the Veterinary Department in Luong Son, Hoa Binh, 2006) Although the contribution of livestock to the GDP of the Luong Son district is not high, it is the main food supply for ... Department at Luong Son, Hoa Binh province The livestock holders as well as local staff at communes (Nhuan Trach, Cu Yen, Hoa Son) in Luong Son, Hoa Binh offered us great cooperation in our field investigation ... having no clinical symptoms 3.6 Behaviors of local people to the outbreak of diseases 115 Investigation of some social factors on the evolution of Avian Influenza (AI) follow up the command...