Introduction to the parasites. Classification of protozoa (the amoebas, the ciliates, the flagellates), Nematodes (Ascaris, Strongyloidies, Trichuris, Guinea worms, Trichinella, Enterobius, etc). Lifecycle and pathogenicity of cestodes (The tapeworms, Larval forms of Cestodes). Life cycle and pathogenicity of the Trematodes (The Schistosome, Fasciola, Paragonimus, etc). Methods of demonstration of parasite in blood, faces, vagina, urine, urethra, pus from lung and liver, skin snips, etc. Mechanisms of their disease production; Epidemiology and control of parasitic diseases. Arthropods of medical importance- the crustaceans, Arachnida, Hexapoda, Myiasis etc. their biology, life cycles and control. Life history as disease vectors various disease of medical importance transmissible by insects. Biology of mosquito in relation to transmission of malaria, filariasis and viral infections etc.