Introduction. Chickenpox is one of the most common infectious diseases in childhood. It is considered a benign disease, but both children and adults can lead to the development of serious complications.Purpose: to study the epidemiological and clinical features of chickenpox in children aged 0–17 years, hospitalized in the Krai government-owned publicy funded health care institution “City clinical hospital No. 11, Barnaul”, for the period 2008–2018.Materials and methods. The materials of the study were data from statistical reporting forms No. 2 of the Federal state statistical observation “Information on infectious and parasitic diseases” in Barnaul for 2008–2018, and medical archive documentation of the children’s infectious diseases Department of the Krai government-owned publicy funded health care institution “City clinical hospital No. 11, Barnaul” for the same period. Data processing was performed using calculation of intensive and extensive indicators, calculation of the arithmetic mean (X) and standard error of the average (m). Calculations were made using the STATISTICA-10 program.Results. The incidence of chickenpox is consistently high, and children aged 3 to 6 years dominated the structure of hospitalized patients with the diagnosis of «chickenpox». All patients were not vaccinated against this infection. Patients developed complications due to the layering of secondary bacterial flora. Summary. Chickenpox is an infectious disease that can be severe, especially in patients with a heavy premorbid background. There is a tendency to” grow up” the infection, which emphasizes the need to discuss specific prevention of the disease.

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In the paper there are presented the main characteristics of the epidemic process of meningococcal infection in the Altai Krai in 2003-2012. The results of the study showed that the incidence was characterized by trend of the declining morbidity rate by 5 times from 3,34 ± 0,17 to 0,66 ± 0,17per 100 thousand of population, respectively (p

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