ABSTRACT
Studies were carried out on echinococcosis in animals, making use of the results obtained with investigations carried out throughout this country. A great number of definitive and intermediate hosts were studied. A considerable drop of the percent of infected animals was recorded over the 1966-1984 period both with the definitive and the intermediate hosts. Data is presented on the territorial spread of hydatid echinococcosis. Enumerated are the factors that bear an influence on this process. The demonstration of the high incidence of the disease as well as of the rising number of dogs substantiates the view that the epizootic status is still unfavourable, which is also due to some other factors.
Subject(s)
Echinococcosis/veterinary , Animals , Animals, Domestic , Animals, Wild , Bulgaria , Cattle , Cattle Diseases/epidemiology , Deer , Disease Reservoirs , Dog Diseases/epidemiology , Dogs , Echinococcosis/epidemiology , Sheep , Sheep Diseases/epidemiology , Swine , Swine Diseases/epidemiologyABSTRACT
Studies were carried out with regard to the diagnosis of intestinal echinococcosis in dogs as the definitive host when still alive, under field conditions. Effective worming and macrohelminthoscopy in such conditions resulted in 52.36 per cent effect. The value found for the average percent of the overall effect of treatment was close to the real values found for the helminthologic status of intestinal echinococcosis. The method employed minimized the epidemiologic and epizootiologic hazards. It was shown to be economically effective and readily applicable.
Subject(s)
Dog Diseases/diagnosis , Echinococcosis/veterinary , Intestinal Diseases, Parasitic/veterinary , Animals , Arecoline/therapeutic use , Dog Diseases/drug therapy , Dogs , Echinococcosis/diagnosis , Echinococcosis/drug therapy , Feces/parasitology , Intestinal Diseases, Parasitic/diagnosis , Intestinal Diseases, Parasitic/drug therapyABSTRACT
Histopathologic investigations in dynamic (from the 3rd up to the 15th month of infection) were carried out on echinococcus cysts and viscera (liver, lungs, spleen, and respective lymph nodes) of sheep with an experimental infection of Echinococcus granulosus. The echinococcus cysts differed in their development. Some of them showed normal structure, while others were in various stages of degeneration or full organization with calcification. The connective tissue capsule showed its characteristic layer structure. The liver presented strong destructive changes, particularly in tissue surrounding cysts in the stage of development. In the lungs there were interstitial and inflammatory changes with obturation of bronchioli (occasional findings). The organs of the peripheral immune system manifested morphologic changes that pointed to the presence of an immune response of mixed type.
