"Bird diseases" . "West Africa" . "Livestock" . "The live poultry trade and the spread of highly pathogenic avian influenza: Regional differences between Europe, West Africa, and Southeast Asia" . "Domesticated birds" . "Poultry" . "Regions of Asia" . "Subtypes of Influenza A virus" . "Continents" . "Meat" . "Southeast Asia" . "Europe" . "Influenza A virus subtype H5N1" . "Regions of Africa" . .