Survey on epidemic of tuberculosis in Kyusyu

The authors surveyed a tuberculosis epidemic during past seven years from 1979 to 1985 by collecting informations from 122 health centers in Kyusyu. There were 5 outbreak cases (2 cases in a kindergarden, one case in a hospital, and 2 cases in a high school). In a case in a high school with about 1,000 students, 10 students who are friends each other developed tuberculosis during the period from 1983 to 1985. In another high school with 784 students, 11 students suffered from tuberculosis, five of them used the same schoolbus. As seven patients developed tuberculosis after graduating from the school, the epidemic was not detected soon enough.