Malaria had being widely prevalent for a long time in Iran. Before starting any anti-malarial campaign in Iran about 60% of population was living in malaria endemic areas. In hyper-endemic areas, approximately 30 to 40% of the total mortality was due to malaria. The malariometric data, reported during 1921-1949 in the malaria surveys in some endemic areas, showed high endemicities of the diseas...