Public health, Infections, Health aspects, Research, Risk factors, Disease transmission, Parasites, Parasitic diseases, Dogs, Antigens, Antibodies, Protozoan - blood, Animal - parasitology, Bacterial - blood, Dog Diseases - epidemiology, Helminth - blood, Dirofilaria immitis - immunology, Dirofilaria immitis - isolation & purification, Dog Diseases - parasit...