[Principles in the diagnosis of primary and occult manifestation of tuberculous infection in children].
An algorithm of complex examination is proposed for early diagnosis of tuberculosis in children with different manifestations of tuberculous infection. The results of clinical and laboratory studies of 209 children by using the most informative values in its diagnosis may establish it in 81.8% of cases in the outpatient setting. While revealing high specific sensitization, some signs of functional disorders or 1-2 direct X-ray signs of an intrathoracic lymph nodal response were detected in 53.1% of the children with suspected tuberculosis, this condition may be interpreted as a borderline between Mycobacterium tuberculosis infection and disease.