Malaria and Chinese economic activities in Africa
研究发现疟疾风险高的非洲地区，中国援助项目、基建工程和工人密度显著偏低，但行业差异、当地人群免疫力、中国工人来源地选择及疟疾治疗可及性会部分缓解这一影响。
We present novel evidence for the influence of malaria exposure on the geographic location of Chinese economic activities in Africa. The hypothesis is based on the observation that many Chinese aid projects and infrastructure contractors rely on Chinese personnel. High malaria exposure might constitute an important impediment to their employment and productivity. Combining data on Chinese aid and construction projects with geo-localized information about the presence of individuals from internet posts reveals a lower density of Chinese activities and of Chinese workers in areas with a high malaria exposure. This effect is mitigated partly through heterogeneity across sectors and immunity of the local population, through the selection of Chinese workers from regions in China with historically high malaria risk, and through the availability of malaria treatment.