[Malaria situation in the People's Republic of China in 1991. Advisory Committee on Parasitic Diseases].

According to the case reporting system, there were 101,636 malaria cases in the nation (Taiwan not included) in 1991, the incidence being 8.875 per a hundred thousand, and 45 cases succumbed to the disease. In comparison with the data of 1990, the case number was reduced by 15,723 and the incidence, by 15.9%. In areas where there were no malaria cases occurred or the incidence was below 1/10000, the residents accounted for 88.1% of the whole population of the country, whereas incidence of 1-10/10000 was recorded in areas covering 10.0% of the total population, and only in areas with 1.9% population, the incidence exceeded 10/10000. In southern part, an increase of 8.61-54.35% in incidence was revealed in Guangdong, Guizhou, Yunnan and Guangxi provinces/autonomous region, which was accompanied by some focal outbreaks; the situation was primordially attributed to the frequency of population migration. In Hainan, Sichuan and Fujian provinces, the malaria incidence was reduced by 3.77-50.57%, however, increase in incidence was noted in individual places at district/city and county levels. In these 7 provinces/autonomous region, the subtotalled cases were 67,241, in a proportion of 66.2% of the total malaria cases of the nation. In the middle and eastern part, despite the flood severely affected many places in Anhui, Jiangsu, Hubei and Henan provinces in 1991, the implementation and intensification of malaria prophylaxis and treatment effectively resulted in an incidence decline by 9.44-41.28%, and no malaria epidemics had occurred.(ABSTRACT TRUNCATED AT 250 WORDS)