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Table 3 Serum cytokine levels (pg/mL) among RSV patients

From: Low birth weight contributed to increased serum IL-6 levels in infantile respiratory syncytial virus infection

  No. IL-2 (SEM) IL-4 (SEM) IL-6 (SEM) IL-10 (SEM) TNF-α (SEM) IFN-γ (SEM)
Reference value   1.1–9.8 0.1–3.0 1.7–16.6 2.6–4.9 0.1–5.2 1.6–17.3
Birth weight
 < 3.0 kg 32 3.90 (0.23) 3.53 (0.16) *107.26 (34.23) 10.06 (1.23) 8.07 (4.44) 11.12 (1.03)
 ≥ 3.0 kg 84 4.01 (0.19) 3.14 (0.08) 33.79 (11.55) 9.79 (1.39) 2.26 0.12) 12.13 (1.45)
Delivery mode
 Vaginal delivery 64 3.99 (0.20) 3.31 (0.09) 67.66 (19.04) 9.01 (1.28) 3.06 (0.67) 11.85 (1.11)
 Caesarean section 52 3.97 (0.23) 3.18 (0.11) 37.32 (16.59) 10.92 (1.75) 4.84 (2.64) 11.86 (2.00)
Wheezing
 No wheezing 31 3.83 (0.35) 3.04 (0.16) 42.49 (19.14) 11.94 (3.40) 2.33 (0.22) 10.22 (1.46)
 With wheezing 85 4.03 (0.16) 3.32 (0.08) 58.28 (16.19) 9.12 (0.75) 4.41 (1.69) 12.45 (1.38)
  1. *P < 0.05, as compared with RSV patients with birth weight ≥ 3.0 kg. IL interleukin, SEM standard error of mean