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流行病学调查表明，单采浆献血员疟疾和丙型肝炎病毒（HCV）感染率分别为4．14％和84．06％，双重感染率为3．72％，疟疾患者合并HCV感染率为89．74％。单采浆献血员疟疾和HCV感染率均显著高于非单采浆献血员．病例对照研究表明，采血、离心分浆和血细胞还输过程中的血液交叉污染，是造成疟疾发病和HCV感染的主要原因．
Epidemiological survey showed that the infection rates of malaria and hepatitis C virus were 4.14% and 84.06%, respectively, and the double infection rate was 3.72%. The prevalence of HCV infection in malaria patients was 89.74%. The levels of malaria and HCV infection in single-cut blood donors were significantly higher than those in nonspecific blood donors. Case-control studies have shown that blood sampling, centrifugal plasmapheresis and cross-contamination of blood cells during blood transfusion are the major causes of malaria and HCV infection.