Related by context. Frequent words. (Click for all words.) 65 wild swans 65 Danube Delta 63 highly pathogenic H#N# strain 62 H5 strain 62 lethal H#N# strain 62 H#N# bird flu 59 deadly H#N# strain 58 H5 virus 58 deadly H#N# virus 56 highly pathogenic strain 54 Ruegen 54 Amur River 53 wild fowl 53 H#N# strain 52 Danube 52 bird flu virus 51 western Peloponnese 51 Vidin 51 bird flu outbreak 51 highly pathogenic avian influenza 51 Bird flu 50 bird flu 50 virulent H#N# strain 50 western Siberia 50 H#N# avian flu 50 Danube River 50 H#N# avian influenza 49 bird flu strain 49 birdflu 49 Azov Sea 49 avian influenza virus 49 avian influenza 49 Crimean peninsula 48 Ural mountains 48 Baltic Sea 48 Rosselkhoznadzor 48 migratory birds 47 Volga River 47 Krasnodar region 47 bird flu outbreaks 47 Black Sea 47 Tula region 47 Stavropol region 47 EHEC 47 highly pathogenic 47 Avian influenza 47 bluetongue 47 swans 47 poultry flocks 47 Aegean island 46 Caspian Sea 46 avian flu 46 poultry farms 46 migrating waterfowl 46 Zaharo 46 migratory route 46 Navapur 46 Constanta 46 sentinel chickens 46 Ebola outbreak 46 Lake Balaton 46 Yambol 46 wildfowl 46 Bourgas 45 A/H#N# virus 45 disease FMD 45 red sludge 45 roe deer 45 Emergency Situations Ministry 45 migratory routes 44 H5 44 Bohai Sea 44 avian flu virus 44 swine fever 44 Lipetsk 44 mosquito borne virus 44 Lake Baikal 43 Khabarovsk 43 Anapa 43 Migratory birds 43 Kalmykia 43 Ural Mountains 43 A/H#N# flu cases 43 Kola Peninsula 43 Brasov 43 Carpathian Mountains 43 Amur 43 Songhua River 43 Lovech 43 H#N# virus 43 Kamchatka peninsula 43 HPAI 43 Emergencies Ministry 43 A/H#N# influenza 43 migrating birds 43 Salmonellosis 43 Kerch Strait 43 Pacific Flyway 42 bird sanctuary 42 Ziketan 42 Haskovo