Objective: to present the clinical and laboratory characteristics of measles in hospitalized children during the period of rising incidence in 2023-2024 in St. Petersburg. Materials and methods. А retrospective study was conducted at the clinic of the Federal State Budgetary Institution DNACIB FMBA of Russia, which included 68 patients aged from 3 months to 17 years 10 months hospitalized from January 2023 to April 2024. The patients underwent clinical and biochemical analyzes blood with assessment of indicators in comparison with age norms. Statistical processing of the results was carried out using Microsoft Excel and Statistica 7 for Windows. Differences were considered statistically significant at p