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报告永清县血传疟疾的流行病学调查结果。本次疟疾流行全年各月份均有发生，年龄分布主要集中在２０～４９岁的青壮年，占总病例数的９４．５１％；男女发病率无显著性差异。近期内有单采浆还输血细胞献血史者（包括兼献全血者）发病率为２４．１４％，占总病例数的９７．８９％；献全血者和既无献血史又无受血史者无一人发病；输血后疟疾５例，占总病例数的２．１１％。调查证实，单采浆血站在采血离心分浆和还输血细胞过程中的血液交叉污染是造成本次疟疾流行的主要原因
Epidemiological survey of blood malaria in Yongqing County was reported. The malaria epidemic took place throughout the year and the age distribution mainly concentrated in young adults aged 20 to 49 years, accounting for 94.51% of the total number of cases. The incidence of males and females was no significant difference. Recently, there was a single apheresis also blood donation history of blood donors (including those with whole blood donors) incidence was 24.14%, accounting for 97.89% of the total number of cases; donated whole blood and neither blood donation nor without No one had a history of blood transfusion; 5 cases of post-transfusion malaria, accounting for 2.11% of the total number of cases. The investigation confirmed that the blood plasma contamination caused by single plasma plasma during blood collection and blood transfusion was the main reason for the malaria epidemic