四川省流行间日疟,主要传疟媒介为嗜人按蚊,其分布区疟疾病例占全省疟疾总数的90％以上。疟疾波动与嗜人按蚊在人房的密度、比例、叮人率升降密切相关。1984年以前,全省发病率低于全国平均值,以后则高于全国平均值,近年来发病率居全国之首,既与嗜人按蚊分布广,又与抗疟措施落实差有关。 The prevalence of vivax malaria in Sichuan Province, the main transmission vector for malaria Anopheles anthrax, the distribution of malaria cases account for more than 90% of the total number of malaria in the province. Fluctuations in malaria and Anopheles anthropophagus in the human population density, proportion, bite rate is closely related to the rise. Before 1984, the province’s morbidity was lower than the national average, but later than the national average. In recent years, the morbidity rate ranked first in the country, not only with the wide distribution of Anopheles anthropophagus but also with the poor implementation of the anti-malarial measures.