Siwak E, Horban A, Witak-Jędra M, et al. - In this study, the evolution of characteristics of the HIV epidemic in Poland was analyzed via conducting cross-sectional data analysis of 3,972 HIV-infected patients followed up in 14 of 17 Polish HIV treatment centers in the years 2000–2015. Late entry to care was reported in the majority (57.6%) of patients, while presentation with advanced HIV disease was observed in 35.6% of patients. Over time, a decrease was observed in the frequencies of cases in which patients were linked to care late and with advanced HIV disease, from 67.6% (2000) to 53.5% (2015) and from 43.5% (2000) to 28.4% (2015). Researchers observed increased odds of being connected to care late or with advanced HIV disease consistently across age categories; these increased from 2.55 [95% confidence interval (CI) 1.46–4.47] for late presentation and 3.13 (95% CI 1.49–6.58) for advanced disease for the 21–30-year-old category to 5.2 (95% CI 1.94–14.04) and 8.15 (95% CI 2.88–23.01), respectively, for individuals > 60 years of age. In addition, Late care entry remained common among people who inject drugs and heterosexual groups.