[Clinical and immunogenetic aspects of children with local and multiple forms of primary tuberculosis].

Immunogenetic examination of 146 preschool children with local and multiple tuberculous lesions and 148 controls found out the key role of unfavourable premorbid background (low-quality BCG vaccine, family contacts, associated diseases) in the disease onset. General trends in systemic immunity shifts are characterized. These depend on the age, inflammation phase, severity of clinical symptoms. Representation of antigens HLA DR2, DR5, Cw2, Cw4 indicates that a child has a 5-9 times greater risk to develop tuberculosis. These data should be allowed for in forming groups of higher risk among children.