通过对５个自然村８３９１人的流行病学调查，单采血浆还输血细胞（单采浆）献血员的疟疾发病率为４．１４％，显著高于献全血和无献血史者。病例对照研究表明，单采浆是疟疾感染的危险因素。献浆相关性疟疾的潜伏期为１６．５天。通过对单采浆血站的调查，单采浆过程存在血液交叉污染环节，血站停业后疫情得到控制。因此，单采浆过程中的血液交叉污染可能是导致这次疟疾流行的主要原因。 Through the epidemiological survey of 8391 people in 5 villages, the incidence of malaria in blood donors collected from apheresis plasma (apheresis) was 4.14%, which was significantly higher than those who donated whole blood and donated blood. Case-control studies show that plasmapheresis is a risk factor for malaria infection. Malaria-associated malaria has an incubation period of 16.5 days. Through the investigation of the single plasma collection station, there was blood cross-contamination in the single plasma collection process, and the outbreak was controlled after the blood station was closed. Therefore, cross-contamination of blood during the single plasmapheresis may be the main reason leading to the malaria epidemic.