Comparison of RFFIT Tests with Different Standard Sera and Testing Procedures  

作　　者：Peng-cheng Yu Akira Noguchi Satoshi Inoue Qing Tang Simon Rayner Guo-dong Liang 

机构地区：[1]State Key Laboratory for Infectious Disease Prevention and Control Institute for ViralD&ease Control and Prevention,Chinese Center for,Disease Control and Prevention,Beijing 102206 [2]Department of Veterinary Science,National Institute of Infectious Diseases,Tokyo 162-8640,Japan [3]State Key Laboratory of Virology,Wuhan Institute of Virology Chinese Academy of Sciences,Wuhan 430071,China

出　　处：《Virologica Sinica》2012年第3期187-193,共7页中国病毒学（英文版）

基　　金：Grant from National Institute of Infectious Diseases(NIID);National Department Public Benefit Research Foundation (201103032)

摘　　要：The World Health Organization （WHO） standard assay for determining antibody level is the rapid fluorescent focus inhibition test （RFFIT） and is used to determine the degree of immunity after vaccination against rabies. To compare the difference in RFFIT results between the laboratories of The National Institute of Infectious Disease in Japan （NIID） and the Chinese Centre for Disease Control （CCDC） as well the influence of the choice of standard serum （STD） for the detection, the two laboratories detection methods were simultaneously manipulated by RFFIT. The reference serums used in NIID and the WHO standard serum used in CCDC were compared in the same RFFIT detection to determine the titer of four sera samples C1, Sl, S2 and S4 in parallel, and the titers of the detected sera samples were calculated using the standard formula for neutralizing antibody titer. No significant difference was found in RFFIT methods from the two laboratories and the RFFIT testing procedures of the two laboratories have good consistency. However, different titers were obtained with the tentative internal standard serum （TI-STD） produced by adjusting to 2.0 IU of WHO standard serum in NIID and the WHO STD. The titer determined with the TI-STD was higher than that determined with WHO STD, This difference appears to be significant and requires further investigationThe World Health Organization (WHO) standard assay for determining antibody level is the rapid fluorescent focus inhibition test (RFFIT) and is used to determine the degree of immunity after vaccination against rabies. To compare the difference in RFFIT results between the laboratories of The National Institute of Infectious Disease in Japan (NIID) and the Chinese Centre for Disease Control (CCDC) as well the influence of the choice of standard serum (STD) for the detection, the two laboratories detection methods were simultaneously manipulated by RFFIT. The reference serums used in NIID and the WHO standard serum used in CCDC were compared in the same RFFIT detection to determine the titer of four sera samples C1, S1, S2 and S4 in parallel, and the titers of the detected sera samples were calculated using the standard formula for neutralizing antibody titer. No significant difference was found in RFFIT methods from the two laboratories and the RFFIT testing procedures of the two laboratories have good consistency. However, different titers were obtained with the tentative internal standard serum (TI-STD) produced by adjusting to 2.0 IU of WHO standard serum in NIID and the WHO STD. The titer determined with the TI-STD was higher than that determined with WHO STD, This difference appears to be significant and requires further investigation.

关 键 词：Rapid fluorescent focus inhibition test （RFFIT） Standard serum Neutralizing antibody TITER 

分 类 号：S828[农业科学—畜牧学] TQ330.61[农业科学—畜牧兽医]