Figure 1

Analysis of the dynamic changes in the lymphocyte subgroup and C-reactive protein (CRP) in the peripheral blood of patients with Influenza A (H1N1) 2009. CD4+ T, CD8+ T, CD4+CD25+ Treg, NK, and CD19+ B cells are presented as a percentage of total peripheral blood leukocytes (PBLs) in severe H1N1 (n = 36) patients, moderate H1N1 (n = 40) patients, and healthy volunteers (n = 20). †: denotes statistically significant differences compared with severe H1N1; *: denotes statistically significant differences compared with the healthy volunteers; **: denotes statistically significant differences compared with the moderate H1N1 patients and with the healthy volunteers.