World Malaria Situation 1988 Overview
1990 Vol.6 NO.9
Indigenous malaria continues to occur in some 100 countries or areas (Map 1). Excluding the WHO African Region where reporting is fragmentary and irregular, the trends in individual countries of the different regions vary, but an upward trend in the number of malaria cases reported in the Americas and some Asian countries is clearly visible. Some 83% of the total number of cases reported annually to WHO (excluding the African Region) are concentrated in Afghanistan, Brazil, China, India, Mexico, Philippines, Sri Lanka, Thailand, Viet Nam. Within these countries malaria shows a marked focalization.