Spotted fever group rickettsia and the reiervoir in Hokkido and Okinawa, Japan.

2000 Fiscal Year Final Research Report Summary

• Project/Area Number: 10660304
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied veterinary science
• Research Institution: Rakuno Gakuen University
• Principal Investigator: MORITA Chiharu Rakuno Gaken Univ.Sch.Vet.Mat., Prof., 獣医学部, 教授 (50072369)
• Project Period (FY): 1998 – 2000
• Keywords: Spotted fever / Rickettsia / Hokkaido / Okinawa / Ixodes ovatus / Ixodes porsulcatus / human / Dog

Research Abstract

The pathogenicity of Spotted fever group rickettsia (SFGR) to human is vary from non-pathogenic one to high pathogenic one. Recently a rickettsia assumed to be nonpathogenic was revealed pathogenic to human in Europe. This study is intended to clarify epidemiology and nature of SFGR in the non endemic areas of Japanese Spotted Fever in Japan. The surveillance of this study is mainly performed in Hokkaido, Okinawa and Osaka. Two species of genus Ixodes ticks were studied in Hokkaido. Rickettsia helvetica that was revealed patogenic to human recently, like organism was detected and isolated from Ixodes ovatus (lo) in the main land of Japan. Detection of the same rickettsia from I.ovatus in Hollaodo is not succeeded. The rickettsiais found in Ixodes persulcatus that is resemble to I.ricinus from which R.helvetica is isolated.

Research Products

• [Publications] Satoh. H,Tsuneki.A.,Inokuma H, Kumagawa. N.Jahana Y.,,Morita C.: "Seroprevalence of antibodies against spotted fever group Rickettsia among dogs and humans in Okinawa, Japan"Microbol., Immunol.,. 45. 85-87 (2001)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Camor. A,G.,Masangkay J,Satoh. H,Okabayashi. T,Norizuki S, Morita C.: "Prevalence of spotted fever rickettsial antibodies in dogs and rodents in the Philippines."Jpn. J.Int. Disy. 53. 162-163 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Okabayashi. T,Hasebe. F,Sarnui.K.L.,Mweene. A.S, Morita C.: "Prevalence of antibodies Against spotted fever murine typhus and Q fever rickettsiae in humans Living in Zambia"Amor. J.Frop. Med. Hyg.. 61. 70-72 (1999)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Ibrahim I.N.,Okabayashi.T,Ristiyanto, Lestari, Morita C.: "Serosurvey of wild rodents for Rickettsioses (spotted fever, murine typhus and Q fever) in Java Island, Indonesia"
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Ibrahim I.N., Okabayashi T., Ristiyanto, Lestari E.W., Yanase T., Muramatsu Y., Ueno H., and Morita C.: "Serosurvey of wild rodents for Rickettsioses (spotted fever, murine typhus and Q fever) in Java Island, Indonesia"Europ.J.Epidemiol.. 15. 89-93 (1999)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Okabayashi T., Hasebe F., Samui K.L., Mweene A.S., Pandey S.G., Yanase T., Muramatsu Y., Ueno H., and Morita C.: "Prevalence of antibodies against spotted fever, murine thyphus and Q fever Rickettsiae in humans living in Zambia"Amer.J.Trop.Me.Hyg.. 61. 70-72 (1999)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Camer Amar Gerry, Masangkay Joseph, Satoh Hiroshi, Okabayashi Tamaki, Norizuki Shuu, Motoi Yurie, Ueno Hiroshi, and Morita Chiharu: "Prevalence of spotted fever rickettsial antibodies in dogs and rodents in the Philippines"Jpn.J.Infect.Dis.. 53. 162-163 (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Satoh Hiroshi, Tsuneki Akemi, Inokuma Hisashi, Kumazawa Norichika, Jahana Yoshihide, Kiyuuna Tsuyoshi, Okabayasi Tamaki, Muramatsu Yasukazu, Ueno Hiroshi, and Morita Chiharu: "Seroprevalence of antibodies against spotted fever group rickettsia among dogs and humans in Okinawa, Japan"Microbiol. Immunol.. 45. 89-91 (2001)
  • Description: 「研究成果報告書概要(欧文)」より