Serum sCD25 predicts mortality and reflects IL-2-driven dysregulation of CD4⁺CD25⁺ T cells in severe fever with thrombocytopenia syndrome. - Zhang Y; Song H; Wang J; Su K; Zhu G; Jia B; Hu L; Xue J; Su X; Li J; Xia Q; Wu W (Tropical medicine and health, 2026)