[Malaria situation in Hunan Province during 2011-2013].

Malaria data in 2011-2013 were collected and statistically analyzed using Microsoft Excel 2003 software. A total of 501 malaria cases were reported, and the annual incidence was 0.2510/100,000, 0.2486/100,000, and 0.3223/100,000, in 2011, 2012, and 2013, respectively, with an average of 0.2740/100,000 in Hunan Province. All these cases were imported and mainly reported from Changsha (44.3%, 222/501), Shaoyang (16.6%, 83/501), Huaihua (8.4%, 42/501), and Yiyang (8.0%, 40/501). 97.0% (486/501) of the cases were laboratory confirmed cases, while the other 3.0% (15/501) were clinically diagnosed. Among those lab confirmed, 41.3% (207/501) were vivax malaria cases, 47.9% (240/501) falciparum malaria cases, 1.4% (7/501) ovale malaria cases, 0.8% (4/501) malariae cases, 6.6% (33/501) mixed infection, and 2.0% (10/501) were unclassified cases. Most cases (202/501) occurred among persons aged 40-49 years. These patients were mainly farmers, workers, migrant workers, and cadres. 47.7% (239/501) were from Africa and 50.1% (251/501) from Southeast Asia.