TY JOUR TI ASSESSMENT OF THE EPIZOOTIC SITUATION OF AVIAN INFLUENZA IN THE NORTH KAZAKHSTAN REGION KW poultry KW avian influenza KW predisposing factors KW high-risk areas JO Bulletin of KSAU AU Maslova, E.N. AU Gavrik, K.V. PY 2023 IS 0 PB Krasnoyarsk State Agrarian University