[Prevalence of tuberculosis and chronic non-specific lung diseases in the towns of the Far North].

In the settlements of the Far North there is a significant reservoir of tuberculosis infection that makes up 40% and 16% in the aborigines and migrants, respectively. The alarming epidemiological prognosis, as well as the developmental association and the coincidence of clinical and social groups at risk for specific and non-specific abnormalities make it expedient to maintain annual mass fluorographic examinations by using screenings to detect the groups to be studied with auxiliary techniques and to actively detect chronic non-specific respiratory diseases.