TY JOUR TI ABOUT ECOLOGICAL AND EPIZOOTOLOGICAL ZONATION OF THE SOUTH CENTRAL SIBERIA ACCORDING TO INFLUENZA A VIRUS KW influenza A virus (IAV) KW birds KW fly-ways KW bird migration KW the most dangerous patho-gens KW epizootic KW environmental safety JO Bulletin of KSAU AU Savchenko, P.A. PY 2016 IS PB Krasnoyarsk State Agrarian University