Totally, 42 319 malaria cases and 57 787 suspected cases with 48 deaths were reported by the Annual Case Reporting System in 1186 counties of 21 Provinces/Municipality/Autonomous Region （P/M/A） in 2005, and the annual incidence was 0.59/10000, an increase of 55.3% than that of the last year. Through the Case Reporting Information System,an internet reporting process started in 2004, 40 371 malaria cases were reported from 1 075 counties of 31 P/M/A. The number of malaria cases and the rank of PIMIA were basically in concordance by the two systems.
Among the 1186 counties with reported malaria cases, 27 counties had an incidence of more than 10/10 000 distributed in Yunnan （15 counties）, Hainan （7 counties） and Anhui （5 counties）. There were 80 counties in which the malaria incidence was between 1/10 000 and 10/10 000.
The number of Plasmodium falciparum malaria cases was 4 146, accounting for 9.8% of the total cases, of which 63.5% （2 632） were imported cases in 178 counties/cities of 18 P/M/A. Indigenous falciparum malaria was found in 47 counties/cities of Yunnan and Hainan Provinces, of which 31 counties/cities were in Yunnan, increased by 29, 16 counties/ cities were in Hainan, same with that of 2004.
Yunnan and Hainan Provinces are still relatively high transmission areas. Yunnan ranked No.2 in the country in terms of the number of cases while Hainan ranked No.1 by malaria incidence in 2005. 19 588 malaria cases were reported from the two provinces in 2005, accounting for 46.3% of the total reported cases in the country. There were 15 072 cases with 38 deaths reported from Yunnan, the incidence was 4.95/10 000, an increase of 60.2% than that in the last year. Among the reported cases, 3 497 were falciparum malaria with 69.00/0 imported from the bordering nations. The number of reported cases in Hainan was 4516, with an incidence of 5.46/10000, 53.1% decrease than the last year.
In central China, the resurgence of malaria was considerable in provinces along the Huai River, espe
Chinese Journal of Parasitology and Parasitic Diseases