关键词: 疟疾, 单采浆供血者, 免疫荧光抗体

Abstract: 166 sera for malaria cases and 489 sera for non-malaria population from Hebei province were examined for malaria antibodies by immunofluorescence antibody test (IfAT).Poritivety rates and GMRT were 62.05% and 40.27 for maIaria cases with average 193 days after attack, 5.32% and 26.11 for the controls respectively, and no difference between male and female.Peak of positivety rates in different age groups was l8 to 49 years old which also was peak of plasmapheresis donation-age.Through further analysis for different populations, pesitivety rates were 64.08% for plasmapheresis associated with malaria, 52.63%for recipients, 40.00% for cases without history of plasmapheresis and blood transfusion, 16.ll% for plasmapheresis donors and 1.08% for the non-malaria adults without history of plasmapheresis and blood transfusion.Nobody was positive of malaria antibodies for 8 - l7 years old population, recipients and whole blood donors in non-malaria groups.It was demonstrated that plasmapheresis was a risk factor for malaria infection.The levels of positivety rate were related with the time to take anti-malaria drugs and to take blood speciments after attack.