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Evaluation of Rapid Diagnostic Kits for the Detection of Group A Streptococcus to<I>Streptococcus pyogenes</I>and<I>Streptococcus</I>spp. with Lancefield's Group A Antigen
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- MITSUNO Noriko
- Department of Clinical Laboratory, Osaka-City General Hospital
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- HARI Tomohiro
- Department of Clinical Laboratory, Osaka-City General Hospital
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- TAMAGAWA Nobuyoshi
- Department of Clinical Laboratory, Osaka-City General Hospital
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- ITOI Juichi
- Department of Clinical Laboratory, Osaka-City General Hospital
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- IKEDA Eiji
- Department of Clinical Laboratory, Osaka-City General Hospital
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- HAMASAKI Kazuko
- Department of Clinical Laboratory, Osaka-City General Hospital
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- KATSUKAWA Chihiro
- Department of Microbiology, Osaka Prefectural Institute of Public Health
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- OKUYAMA Michiko
- Department of Clinical Laboratory, Osaka-City General Hospital
Bibliographic Information
- Other Title
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- A群レンサ球菌迅速診断キットの基礎的検討
- Evaluation of Rapid Diagnostic Kits for the Detection of Group A Streptococcus toStreptococcus pyogenesandStreptococcusspp. with Lancefield's Group A Antigen
- <I>Streptococcus pyogenes</I>およびA群多糖体抗原を有するその他の<I>Streptococcus</I>spp.を対象として
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Description
We studied the basic performance of eight rapid diagnostic kits for the detection of Group A streptococcus by immunochromatography under the same conditions. Kits were the QuickVue Dipstick Strep A (Sumitomo Seiyaku Biomedical Co., Ltd.), TESTPACK Plus STREP A (ABBOTT JAPAN Co., Ltd), CLEAVIEW STREP A (Nihon Schering K. K.), QuickVue STREP A (Wako Pure Chemical Industries, Ltd), ImmunoCard STAT! STREP A (TFB, INC.), DIPSTICK ‘Eiken’STREP A (Eiken Chemical Co., Ltd.), Rapid Testa Strep A (Daiichi Pure Chemical Co., Ltd.), and StatCheck Strep A (KAINOS Laboratories, Inc.).<BR>Four of these kits, i.e. QuickVue Dipstick Strep A, TESTPACK Plus STREP A, Rapid Testa Strep A, and StatCheck Strep A showed sensitivity at 1.0×105CFU/mL (1.0×104CFU/test) with all ofS.pyogenestested, while the Anginosus group andS. dysgalactiaesubsp.equisimiliswith Lancefield' s group A antigen showed sensitivity very similar toS. pyogenes.<BR>Of these strains, S. dysgalactiaesubsp.equisimilisformed a β-hemolytic colony resembling that ofS. pyogeneson sheep blood agar, and was sensitive to bacitracin. It is thus indispensable to identify the colony using biochemical tests such as the PYR (pyrrolidonylarylamidase production) test.<BR>In using rapid diagnostic kits for the detection of Group A streptococcus, it is important to rule out the possibility of Group A streptococcus other thanS. pyogenesin throats.<BR>Severe invasive group-G streptococcal infections are increasing recently. ConcerningS. dysgalactiaesubsp.equisimilis, it is especially important to conduct these identification tests.
Journal
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- Kansenshogaku Zasshi
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Kansenshogaku Zasshi 80 (6), 665-673, 2006
The Japanese Association for Infectious Diseases