[Epidemiological analysis of malaria prevalence in Sichuan Province, 2012-2014]

Objective: To understand the characteristics of malaria prevalence in Sichuan Province from 2012 to 2014, so as to provide evidences for improving the work of malaria elimination.

Methods: The epidemiological data of malaria cases in Sichuan Province were collected from the Disease Surveillance Information Reporting System of Chinese Center for Disease Control and Prevention, and analyzed with the descriptive epidemiological method.

Results: A total of 690 imported malaria cases were reported in Sichuan Province from 2012 to 2014. In detail, 54.49% (376/690) were falciparum malaria cases, 42.03% (290/690) were vivax malaria cases, 0.58% (4/690) were malariae malaria cases, 1.88% (13/690) were ovale malaria cases, and 1.01% (7/690) were mixed infection cases with Plasmodium vivax and P. falciparum. Among them, five cases died. Totally 671 malaria cases were infected overseas, accounting for 97.25% of the total cases. Among which, 517 patients returned from Africa and 138 patients returned from Southeast Asia. There were malaria cases reported in the whole year, and 185 cases were reported in May and June, accounting for 26.81% of the total cases. The cases distributed in 20 prefecture-level cities in the whole province, and there were 137 and 105 ones reported in Guangan and Chengdu, respectively, which accounted for 35.07% of the total cases.

Conclusions: The number of patients with overseas imported malaria in Sichuan Province increases year by year, and therefore effective measures should be carried out to control the overseas imported malaria.