Longitudinal epidemiology of Chlamydia trachomatis serovars in female patients in Japan

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  • Takahashi Syun
    Department of Nutrition, Women’s College for Nutrition, Japan Department of Laboratory Medicine, Saitama Medical School, Japan
  • Yamazaki Tsutomu
    Department of Pediatrics, Saitama Medical School, Japan Department of Virology I, National Institute of Infectious Diseases, Japan
  • Satoh Kozue
    Department of Virology I, National Institute of Infectious Diseases, Japan
  • Inoue Miyuki
    Department of Pediatrics, Saitama Medical School, Japan
  • Takahashi Sachiko
    Department of Obstetrics and Gynecology, Saitama Medical School, Japan
  • Ishihara Osamu
    Department of Obstetrics and Gynecology, Saitama Medical School, Japan
  • Oka Yohko
    Department of Infectious Diseases and Infection Control, Saitama Medical School, Japan
  • Horiguchi Yuji
    Department of Infectious Diseases and Infection Control, Saitama Medical School, Japan
  • Okuwaki Yoshiyuki
    Department of Nutrition, Women’s College for Nutrition, Japan
  • Suzuki Satowa
    Department of Bacteriology II, National Institute of Infectious Diseases, Japan
  • Kishimoto Toshio
    Department of Virology I, National Institute of Infectious Diseases, Japan

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タイトル別名
  • Longitudinal Epidemiology of <i>Chlamydia trachomatis</i> Serovars in Female Patients in Japan

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<p>The objective of this study was to clarify the longitudinal epidemiology of Chlamydia trachomatis serovars in Japan. A total of 339 endocervical swab specimens obtained from female patients who attended the Department of Obstetrics and Gynecology, Saitama Medical School, were used. Positive specimens of either transport medium of IDEIA Chlamydia (1st group, from 1999 to 2001), or DNA extract of Cobas Amplicor STD-1 Chlamydia trachomatis (2nd group, from 2003 to 2005) were used for serotyping. Typing of C. trachomatis serovars in DNA extracts was performed by polymerase chain reaction-restriction fragment length polymorphism. Ten serovars, A, B, D, E, F, G, H, I, J and K, were identified in the 1st group, and serovar E was most frequently identified (27.6%). In the 2nd group, nine serovars, B, C, D, E, F, G, H, I and K, were identified, and serovar D was most frequently identified (24.7%). Serovars B and Ba were significantly more common around 2000 and the mid-1990s (from 1993 to 1996), respectively. Numbers of serovar I increased significantly during the research period. In addition, serovar I was more frequent in the 2nd group than in the 1st group in women aged 20 - 29 years. There were no significant differences of serovar distribution between pregnant and non-pregnant women.</p>

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