In Malaysia malaria is still a major public health problem. At the end of 1986 it was estimated that 14.6% of the population lived in malaria prone areas and 8.4% lived in endemic areas. Malaria eradication and control programmes were instituted separately at different times in Peninsular Malaysia, Sabah and Sarawak. Inaccessibility of endemic areas, opening of lands for developmental projects and emergence of drug resistant strains of P. falciparum are problems that make control of this infection difficult. Malaria vaccine is being developed.