Forty-four percent of patients demonstrated a low ratio of T4 to T8. Conclusion The lymphocytes and its subsets were impaired in SARS, especially for T lymphocytes, T4 cells were more seriously damaged than T8 cells.

• 结论SARS患者的淋巴细胞及其各亚群均受到破坏,以T淋巴细胞受损为主,且T_4细胞较T_8细胞受损严重;