Proceedings of the International scientific and practical conference ―Science, technology and art in global context‖ (October 14-16, 2025) / Publisher website: www.naukainfo.com. – Warsaw, Poland, 2025. - 72 p.

48 content against a background of low platelet content. CRP levels within 25.81±2.72 g/l, an increase in ESR to 22.84±1.67 mm/g with a high content of segmented neutrophils in the blood within 51.09±2.11% and a decrease in the content of blood platelets may indicate a high probability of developing an unfavorable course of IM. Conclusion. The clinical and laboratory features we have identified will allow to predict the further course of the disease at an early stage of IM which in turn will allow optimizing patient treatment. REFERENSES: 1. Li Y, Wang K. Clinical analysis of 163 pediatric patients with infectious mononucleosis: a single‐center retrospective analysis. Immun Inflamm Dis. 2024;12:e70020. 10.1002/iid3.70020 2. Cai K, Zhou B, Huang H, Tao R, Sun J, Yan C, Lee PMY, Svendsen K, Fu B, Li J, Huang L. Risk of malignancy following exposure to Epstein-Barr Virus associated infectious mononucleosis: A nationwide population-based cohort study. Front Oncol. 2022 Dec 14;12:991069. doi: 10.3389/fonc.2022.991069. PMID: 36591501; PMCID: PMC9795179. 3. Jason LA, Cotler J, Islam MF, Furst J, Katz BZ. Predictors for Developing Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Following Infectious Mononucleosis. J Rehabil Ther. 2022;4(1):1-5. doi: 10.29245/2767- 5122/2021/1.1129. Epub 2022 Feb 21. PMID: 35350440; PMCID: PMC8959090. 4. Tian S, Zheng J, Zhou Z, Yang Q, Sun B, Li Y, Lin Z, Long Y, Guan S, Wang S, Zhuang J, Zhang W, Shao L, Deng J. Retrospective Review of Children Hospitalized for Epstein-Barr Virus-Related Infectious Mononucleosis. Pathogens. 2025 Jul 16;14(7):702. doi: 10.3390/pathogens14070702. PMID: 40732748; PMCID: PMC12299831.