Abstract
BackgroundCross-border malaria transmission in China is a major component of Chinese imported malaria cases. Such cases mostly are travellers returning from malaria endemic countries in Africa. By investigating malaria infectious status among Chinese worker in Africa, this study analysed the malaria risk factors, in order to establish infectious forecast model.MethodsChinese returnees data from Africa were collected at Guangzhou Baiyun International Airport, Guangzhou, China between August 2015 and March 2016 and were included in the cross-sectional and retrospective survey.ResultsA total of 1492 respondents were included in the study with the majority consisting of junior middle school educated male. Most of them are manual and technical workers hired by companies, with average of 37.04 years of age. Overall malaria incidence rate of the population was 8.98% (134/1492), and there were no significant differences regarding age, gender, occupation, or team. Forecast model was developed on the basis of malaria risk factors including working country, local ecological environment type, work duration and intensity of mosquito bite prevention.ConclusionsThe survey suggested that malaria incidence was high among Chinese travellers who had worked in Africa countries of heavy malaria burden. Further research on the frequency and severity of clinical episodes among Chinese travellers having worked in Africa is needed.
Highlights
Cross-border malaria transmission in China is a major component of Chinese imported malaria cases
Another 128 respondents without fever confirmed that they had been infected with malaria in Africa, and 6 respondents with fever were diagnosed with malaria
The forecast model among Chinese travellers who had worked in Africa is based on malaria risk factors which suggested that educational background was not included and the malaria risk factors are complicated
Summary
Cross-border malaria transmission in China is a major component of Chinese imported malaria cases. Such cases mostly are travellers returning from malaria endemic countries in Africa. By investigating malaria infectious status among Chinese worker in Africa, this study analysed the malaria risk factors, in order to establish infectious forecast model. Imported malaria cases from Africa is becoming a threat to many countries [2, 3]. There is a lack of information regarding epidemiology of the imported malaria cases among Chinese returnees worked in Africa. The objective of this study was to investigate the malaria infectious status among Chinese returnees from Africa and infectious risk factors
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