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Tytuł pozycji:

Estimation of the window period of human T-cell leukemia virus type 1 and 2 tests by a lookback study of seroconverters among Japanese voluntary blood donors.

Tytuł :
Estimation of the window period of human T-cell leukemia virus type 1 and 2 tests by a lookback study of seroconverters among Japanese voluntary blood donors.
Autorzy :
Sagara Y; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
Nakamura H; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
Yamamoto M; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
Ezaki T; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
Koga T; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
Shimamura M; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
Satake M; CEO of Japanese Red Cross Central Blood Institute, Tokyo, Japan.
Irita K; Department of Quality, Japanese Red Cross Kyushu Block Blood Center, Chikushino, Japan.
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Źródło :
Transfusion [Transfusion] 2020 Dec 24. Date of Electronic Publication: 2020 Dec 24.
Publication Model :
Ahead of Print
Typ publikacji :
Journal Article
Język :
English
Imprint Name(s) :
Original Publication: Arlington, Va. : American Association Of Blood Banks
References :
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Grant Information :
JP19fk0108037 Japan Agency for Medical Research and Development, AMED; Infection-110 Japanese Red Cross Blood Programme
Contributed Indexing :
Keywords: HTLV-1/2 tests; blood donors; seroconverter; window period
Entry Date(s) :
Date Created: 20201228 Latest Revision: 20201228
Update Code :
20210210
DOI :
10.1111/trf.16213
PMID :
33368334
Czasopismo naukowe
Background: Japan is endemic for human T-cell leukemia virus type 1 (HTLV-1), and the horizontal transmission of HTLV-1 is often reported. However, the window period (WP) for serologic or molecular screening is unclear.
Study Design and Methods: Results for anti-HTLV-1 screening and confirmatory tests obtained from 648 591 repeated blood donors in the Kyushu district, one of the most endemic areas of HTLV-1 in the world, were evaluated. A lookback study was conducted for seroconverters.
Results: During 2012 to 2019, 436 seroconverters (155 men, 281women) were identified with use of a screening chemiluminescence enzyme-immunoassay (CLEIA) and multiple confirmatory tests. Because the period between the latest seronegative donation and seroconversion was highly variable (2.1-276.7 months), 19 cases that seroconverted within 6 months were subjected to the analysis. The WP of the particle agglutination assay and CLEIA was estimated to be 2.2 ± 0.6 and 2.6 ± 1.7 months, respectively. The WP of the indirect immunofluorescence assay was 4.8 ± 6.5 months. Although the WP of western blotting was estimated to be 6.3 ± 8.7 months, four cases were still indeterminate through the study period. Chemiluminescence and line immunoassays, the current screening and confirmatory tests used in the Japanese blood program, showed the shortest WP of 2.2 ± 0.6 months. The WP of real-time polymerase chain reaction for HTLV-1 was estimated to be 4.1 ± 7.8 months.
Conclusions: The WP in commercially available testing systems for HTLV-1/2 was determined for natural infection among repeated blood donors. Considering the HTLV-1 WP will help increase transfusion safety and facilitate the accurate diagnosis of HTLV-1 infection.
(© 2020 AABB.)

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