沖縄における癩の疫学的研究

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書誌事項

タイトル別名
  • The Epidemiological Study on Leprosy in Okinawa Island
  • オキナワ ニ オケル ライ ノ エキガクテキ ケンキュウ 3 リトウ ノ エキ
  • The Third Report; On the Islets
  • 第3報 離島の疫学的研究

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抄録

The Okinawa Archipelago consits of 72 islands in which 48 islands have small population but most of them have been isolated and have few social communication and interchange between each other for a long time.<br>To investigate leprosy epidemiological status and to find out the epidemiological pattern to decide leprosy endemic situation, these islands are suitable fields for the study.<br>The data on Leprosy Annual Incidence Rate (I. R.), Lepromatous Annual Incidence (L. I. R.), Lepromatous Ratio (L. Ratio) and Child Ratio (C. Ratio) have been collected from ten islands since 1931.<br>Sometimes new leprosy cases were not considered as newly manifested patients in the year, because leprosy disease is chronic and usually it takes several years for the patients to be diagnosed as leprosy after they developed the disease. So the data are counted by 5-year period.<br>The follwing becomes clear after the leprosy epidemiological assessment on the data of islands given here;<br>1. Leprosy in the Island of Iheya, Ie, Aguni, Tonaki and Zamani are almost eradicated already.<br>2. Leprosy in the island of Irabu, Tarama and Kume are still endemic and forcast to get more new cases in future.<br>3. Leprosy in the Island of Yonaguni is still highly endemic.<br>According to the result of analysis of the data, the leprosy epidemiological patterns of gragh which indicate the epidemiological situation are shown below;<br>1. In the leprosy high endemic stage, the gragh of I. R. L. I. R. L. Ratio and C. Ratio show rising equally and locate in high level.<br>2. In the eradicated stage, all four graghs show falling down parallel with each other and locate in low level or reach 0, in this case C. Ratio surely precedes falling down or become 0 before the other three graphs show falling down.

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