In the introduction the authors give an account of immunization against tuberculosis in post-war Czechoslovakia up to the present time from the aspect of the epidemiologist. After a 14-year interval the authors evaluate the results of the investigation and treatment of children with osseous complication after immunization with the BCG vaccine type Moscow. The group comprises four children who were hospitalized years ago at the Orthopaedic Clinic in Hradec Králové for assessment of the diagnosis and initiation of comprehensive treatment. In addition to two patients described in 1986 in this journal there were another two patients who completed the number of detected cases of BCG osteomyelitis in the region. During the follow-up and treatment complications were recorded such as the formation of abscesses and fistulae. A unique complication was the development of a calcified abscess on the leg which was removed surgically. Follow-up of the children to adolescent age made it possible to evaluate the influence of a specific inflammation on the growth plate. The method and period of treatment, complications and permanent sequelae do not differ essentially from tuberculosis of the bones. Key words: BCG osteomyelitis, BCG calcified abscess, osseous complications after BCG vaccination type Moscow.