[Respiratory system involvement in pseudotuberculosis].
Clinical, microbiological, x-ray and immunological examinations of 1376 patients with pseudotuberculosis and 465 patients with acute respiratory diseases of viral or coccal origin, the trends in annual morbidity for the above diseases followed up within 7 years in the populations where the patients were registered and experimental investigations on rabbits provided evidence for primarily generalized pattern of pseudotuberculosis infection and a direct relationship between pulmonary lesions in the animals and effective dose of the infectant, route of the infection. The patients had nonspecific (non-yersiniosis) lesions of the respiratory system. Frequency of the infection was greater in cold seasons, especially in those who did not complete social and biological adaptation to new conditions, and depended on seasonal fluctuations of respiratory infection morbidity in nonrandom populations.