Present Status of Tuberculosis in the Inhabitants of Tokunoshima-town.:1st Report: Investigations on the tuberculin Reaction.

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Prevalence of tuberculosis has been investigated on the 18, 977 inhabitants of Tokunoshima-town in the one of Amami-Islands in October, 1960. This island is located in the south part of Kagoshima prefecture, between Amami-Island and Okinawa. In the present paper, the results obtained on the tuberculin reaction are presented.<BR>One to tenth ml of old tuberculin in a dilution of 1: 2, 000 was injected intradermally on the 1/3 distal part of the flexor side of right forearm to avoid the accelerated reactions due to the repeated tuberculin injection. The reading of the reaction was made at 48 hrs after the injection. Except for less than 3 months old babies, all inhabitants received tuberculin injection, and the negative or the doubtful reactors were vaccinated with BCG except for more than 65 years of age. Results obtained are as follows:<BR>1) Population: The number of females was 9, 796 (51.7%) and that of males was 9, 181 (48.3 %). The number of people in the age group of 15-29 years in this town was markedly less than that of the average figure of Japan. This is due to such a bad economical situation that the younger people have to leave this island to obtain jobs.<BR>2) The examination rate was 97.3% to the total inhabitants, The majority of the unexamin
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