Aim of the research – to study epidemiological data, clinical symptoms and the course of measles among hospitalized infants during the first year of life in Infectious Diseases Communal Clinical Hospital, Lviv city.Material and methods. In 2018, 235 infants with measles aged from one month to one year were treated in an inpatient department of Infectious Diseases Communal Clinical Hospital. Diagnosis of measles was based on typical clinical manifestations of the disease, data of epidemiological anamnesis, common laboratory (hemogram, urinalysis), and immunological investigations (determination of the level of specific IgM class antibodies in blood serum).Results. Among hospitalized infants in the first year of life with the diagnosis “measles” to Infectious Diseases Communal Clinical Hospital, city residents prevailed – 74.9%. Most frequently, the disease cases were recorded in 7-9-month-old (33.6%) and 10-12-month-old infants (29.4%). In 87.7% of patients, the sources of infection were school age children and ill parents. Incorrect diagnoses at pre-hospital stage were established in 22.1% cases. In 71.1%, infants were admitted to Infectious Diseases Communal Clinical Hospital before the rash originated, in 28.9% – during rash period. A clinical picture of measles was characterized by typical course with minimal catarrhal manifestations in early period of the disease. Signs of conjunctivitis and blepharitis intensified in 34.9% of children from the onset of rash. Koplik’s spots, as a rule, were atypical and observed only in 79.6% of patients. Moderate forms of the disease prevailed (70.2%). Complications developed only in patients with severe forms of the disease and burdened premorbid background. Among complications, pneumonia (5.5%) and obstructive bronchitis (2.1%) dominated.Conclusions. Measles in infants during the first year of life demonstrates all typical features and is characterized by the prevalence of moderate forms. In mild forms of the disease, clinical symptoms are not evident, which enables to compare it to mitigated measles. Severe forms with the development of complications on the part of the respiratory tract were observed in 7.7% of children, usually with premorbid background. Rapid increase in the number of infants with measles in the first year of life is a predictable consequence of the situation, which occurred due to incomplete conduction of prophylactic measures aimed at prevention of measles, primarily, non-compliance of vaccination schedule for children and mandatory conduction of anti-epidemic measures in the focus of infection.