摘要: 1 Introduction 2 Classification 3 Structure and Life Cycle 4 Biochemistry, Molecular Biology, Genetics 5 Clinical Aspects 6 Immunology 7 Pathology 8 Diagnosis 9 Epidemiology 10 Chemotherapy Treatment 11 Vaccination 12 Integrated Control Keywords: old world leishmaniasis; leishmaniases-group of human diseases afflicting people; five species Leishmania-L. major, L. tropica, aethiopica, donovani, infantum; zymodeme-group strains sharing given pattern enzyme electrophoretic mobilities; parasites in two morphological forms-‘amastigotes’ ‘promastigotes’; amastigotes-ovoid, non-motile, intracellular stages; promastigotes-elongated, motile, extracellular stages; lysosomes cytoplasm together with organelles; promastigote surface protease, lipophosphoglycan glycosylphosphatidylinositols