关键词: 疟疾, 流行规律, 蚊虫密度, 雨汛

Abstract: The author analysed the systemic data on seasonal variation of Anopheles sinensis, the main vector of malaria, and morbidity of of vivax malaria during 1960 to 1986 in Shandong province. It concluded that in paddy-field region of South and West Shandong the quantitative peak of An. sinensis in year was atmospherio-temperature-induced, which caused the peak of malaria incidence consequent, result ing in that this region was the high epidemic area of malaria. In dry-field regions of other parts of Shandong the maximum peak of An. sinensis density in year was rainsinduced, while in water field region of North and East Shandong it was air-temperature-induced. In these types of regions, since the maximum quantitative peak of An. sinensis appeared too late to cause a new peak of malaria incidence due to the temperature getting cold at the time the maximum density peak of mosquitoes appeared, so these areas were the low epidemic area of malaria.