Trends of imported malaria in China 2010–2014: analysis of surveillance data

Malaria Journal

Research

Chris Cotter¹  Canjun Zheng²  Sheng Zhou²  Huazhong Li²  Qian Zhang²  Zhongjie Li²  Hongjie Yu²  Weizhong Yang²  Shuisen Zhou³  Xiaonong Zhou³ 

[1] Global Health Group, University of California, San Francisco, San Francisco, CA, USA;Key Laboratory of Surveillance and Early-warning on Infectious Disease, Division of Infectious Disease, Chinese Centre for Disease Control and Prevention, 155 Changbai Road, Changping District, 102206, Beijing, China;National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention, 200025, Shanghai, China;

关键词: Imported malaria;    Surveillance;    Elimination;    Exported labour;    China;    Africa;   

DOI  :  10.1186/s12936-016-1093-0

 received in 2015-10-10, accepted in 2016-01-10,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundTo describe the epidemiologic profile and trends of imported malaria, and to identify the populations at risk of malaria in China during 2010–2014.MethodsThis is a descriptive analysis of laboratory confirmed malaria cases during 2010–2014. Data were obtained from surveillance reports in the China Information System for Disease Control and Prevention (CISDCP). The distribution of imported malaria cases over the years was analysed with X2 for trend analysis test. All important demographic and epidemiologic variables of imported malaria cases were analysed.ResultsMalaria incidence in general reduced greatly in China, while the proportion of Plasmodium falciparum increased threefold from 0.08 to 0.21 per 100,000 population during the period 2010–2014. Of a total 17,725 malaria cases reported during the study period, 11,331 (64 %) were imported malaria and included an increasing trend: 292 (6 %), 2103 (63 %), 2151 (84 %), 3881 (96 %), 2904 (97 %), respectively, (X2 = 2110.70, p < 0.01). The majority of malaria cases (imported and autochthonous) were adult (16,540, 93 %), male (15,643, 88 %), and farming as an occupation (11,808, 66 %). Some 3027 (94 %) of imported malaria cases had labour-related travel history during the study period; 90 % (6340/7034) of P. falciparum infections were imported into China from Africa, while 77 % of Plasmodium vivax infections (2440/3183) originated from Asia.ConclusionsMalaria elimination in China faces the challenge of imported malaria, especially imported P. falciparum. Malaria prevention activities should target exported labour groups given the increasing number of workers returning from overseas.

【 授权许可】

CC BY   
© Zhou et al. 2016