We surveyed a tuberculosis epidemic during past seven years from 1979 to 1985 bycollecting informations from 122 health centers in Kyusyu.
There were 5 outbreak cases (2 cases in a kindergarden, one case in a hospital, and 2cases in a high school).
In one of 2 cases in a kindergarden, 5 children were infected from a 23-year-old nurse.
In another case in a kindergarden, 60 children were infected most likely from a 49-year-old nurse. The chest X-ray examinations showed abnormality in 7 children and 3nurses.
In a case in a hospital, the chest X-ray examination showed abnormality in 4 patientsafter a 54 old-man developed tuberculosis.
In a case in a highschool with about 1, 000 students, 10 students who are friends eachother developed tuberculosis during the period from 1983 to 1985.In another highschool with 784 students, 11 students suffered from tuberculosis fiveof them used the same schoolbus. As seven patients of them developed tuberculosis aftergraduating from the school, the epidemic was not detected soon.
