We had a case of lung tuberculosis in an 80 year-old woman, who was diagnosed 3 months after admission to a health service facility for the elderly requiring long-term care. Here we report how we coped with the situation.　　The diagnosis was made by the use of a gene-amplification method. Predonine 7.5 mg/day was prescribed for interstitial pneumonia. TB infection prevention program included a QFT test and chest radiography, and medical interviews was carried out 42 users and 17 staffers of the facility. The program was examined for two years. It was managed by a regional Public Health Center, however, we were involved in many matters offering medical and social information of the subjects to the Center and often notifying the subjects and their family of the schedules and information. Many of the user subjects had been discharged from the facility when the investigation was over, so it was difficult to communicate with them. The QFT test was regarded important and the QFT test positive persons were treated as latent TB infection cases.