[Epidemiological analysis of overseas imported malaria in Wuhan City]

To analyze the epidemiologic feature of overseas imported malaria in order to provide the evidence for improving the surveillance and control of malaria in Wuhan City.

The epidemiological investigation data of overseas imported malaria cases were collected and analyzed with an epidemiological method including plasmodium species, epidemic focus distribution, domestic distribution, population characteristics, attack-diagnosis interval, clinical grading, etc. in Wuhan City from 2008 to 2013.

A total of 240 overseas imported malaria cases were reported, including 180 cases from African countries and the proportion of Plasmodiumfalciparum infections was 82.22%, and 60 cases from Southeast Asian countries and the proportion of Plasmodium vivax infections was 76.67%, and the proportions of the parasite species were significantly different between the two regions (χ2 = 105.53, P <0.001). The male and young adults were dominant. there were no statistical significance between clinical grading and attack-diagnosis interval (Z=-0.99, P = 0.32) , vocational background (χ2 = 10.61, P=0.10), then clinical symptoms aggravated the situation was occurred more easily among the first attack cases (χ2 = 7.66, P <0.05) and the falciparum malaria cases (χ2 =24.27, P<0.001).

The overseas imported malaria cases are increasing rapidly with years and the malignant malaria cases were more than other malaria cases in Wuhan City. Therefore, the surveillance and management of the returnees from malaria endemic areas should be strengthened continually.