Pneumonia in children, despite significant advances in prevention and treatment, still remains one of the most pressing problems in pediatrics. [3,5,16,19,21]. In recent years, there has been an increase in morbidity in children, and mortality from this disease remains relatively high. In real practice, especially in outpatient settings, early diagnosis and rational therapy of pneumonia in children are serious problems. Pneumonia is an acute infectious disease of different etiologies, characterized by focal lesions of the lungs with intraalveolar exudation, which manifests itself in various degrees of intoxication, respiratory disorders, local physical changes in the lungs and the presence of an infiltrative shadow on the chest x-ray. The incidence of pneumonia is 15-20 per 1000 children in the first year of life. It is necessary to distinguish between "typical" forms of the disease with a clear focus or infiltrate on the radiograph and "atypical" - with inhomogeneous changes that do not have clear boundaries.