[Epidemiological analysis of malaria epidemic situation in Guangdong Province, 2011].

Objective: To analyze the features of malaria epidemic in Guangdong Province in 2011 so as to provide the evidence for the elimination of malaria in Guangdong Province.

Methods: The data from the Disease Reporting Information System of Chinese Center for Disease Control and Prevention were analyzed with the descriptive epidemiological method for the epidemiological characteristics of malaria in Guangdong Province in 2011.

Results: A total of 96 malaria cases were reported in Guangdong Province in 2011, with an annual mean incidence of 0.092 per 100 thousand. There were 40 cases of Plasmodium vivax infection, 36 cases of Plasmodium falciparum infection and 20 cases of undivided malaria. There were 2 death cases. There were cases reported in 34 counties/cities/districts of 17 prefecture-level cities in the whole province. The cases distributed mainly in Guangzhou and Shenzhen, where there were 57 cases, reaching 59.38% of the cases of the whole province. There were cases reported every month in the whole year. From May to November, 73 cases were reported, accounting for 76.04% of the cases of the whole year. The ratio of male to female cases was 5.86: 1. The age distribution concentrated mainly on 20-50 years old. The youngest patient was 1 years old and the eldest was 65 years old. The occupation distribution concentrated mainly on the worker, commercial service, peasant, housekeeper and unemployed people (68 cases, 70.83%). In addition to the aforementioned 96 cases of local census register population, there were 32 cases of nonlocal census register population found in Guangdong, 2011. Of the total 128 cases, the main original areas of the imported cases were Africa (77, 60.16%) and Asia (30, 23.44%). The country with the most cases was Nigeria in Africa (36 cases), the second was Angola in Africa (19 cases), and the third was Myanmar in Asia (11 cases).

Conclusion: The malaria epidemic situation in Guangdong Province is relatively stable in 2011, but the imported cases of Plasmodium falciparum infection increase. Therefore, the surveillance, prevention and control for imported cases of P. falciparum infection should be strengthened.