Clinical Testing of Combined Vaccine Against Enzootic Pneumonia in Industrial Pig Farming in Bulgaria
Roman Pepovich, Branimir Nikolov, Ivo Sirakov, Krasimira Genova, Kalin Hristov, Elena Nikolova, Radka Hajiolova, Boika Beltova
Pathological changes in natural infection of pheasants with highly pathogenic avian influenza A (H5N8) in Bulgaria
Georgi M. Stoimenov, Gabriela V. Goujgoulova, Branimir Nikolov, Kalin Hristov, Atanaska Teneva