Prevalence of antibodies to Schistosoma japonicum in the Chikugo River basin.

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概要

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• Prevalence of anti-S. japonicum antibodies in persons living in the Chikugo River basin, Kyushu, previously an endemic area of schistosomiasis japonica, was investigated by circumoval precipitin (COP) and indirect haemagglutination (IHA) tests. Of 327 specimens of sera collected, 51 (15.6 %) and 112 (34.3 %) were positive by COP and IRA tests, respectively. Reactivities of the COP test were predominantly weak and 82.1 % of IHA-positive sera were of low titers-1:40 to 1:80. Between the results of COP and IHA tests no relation was observed. When indirect fluorescent antibody (IFA) test was applied to randomly sampled 67 sera, using S. japonicum adult worms fixed with Rossman's fixative higher concordance (64.2 %) was observed between IFA and IHA tests in comparison to that (32.8 %) between IFA and COP tests. However, the relationship between results of IFA and IHA tests was not statistically significant. The differences among the results obtained by those serological tests are believed to result from differences in antigen components as well as by the low levels of antibody titers. The results show that anti-S. japonicum antibodies are still prevalent in this district, but since most sera tested are only slightly positive, active infection with S. japonicum is not apparently a problem at present.

• 久留米大学医学部 The Kurume Medical Journal 編集部の論文

著者

• Takao Yoshinori

  Department Of Aeronautics And Astronautics Graduate School Of Engineering Kyoto University

• Yoneda Yutaka

  Department Of Internal Medicine Kyoto Katsura Hospital

• Hirata Mizuki

  Department Of Parasitology Faculty Of Medicine Kurume University

• Yoshioka Naoki

  Department Of Anesthesiology And Icm Kawasaki Medical School

• Iida Hiroki

  Department Of Anesthesiology And Critical Care Medicine Gifu University School Of Medicine

• Tsutsumi Hiroshi

  Department Of Bioengineering Tokyo Institute Of Technology

• Takao Yoshinori

  Department of Parasitology, Kurume University School of Medicine

• YOSHIOKA NAOKI

  Department of Parasitology, Kurume University School of Medicine

• MIYASAKA KEITA

  Department of Parasitology, Kurume University School of Medicine

• MAKI KIYOTAKA

  Department of Parasitology, Kurume University School of Medicine

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