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Table 7 Features in patients not diagnosed with IM

From: The impact of serological features in Chinese children with primary or past Epstein–Barr virus infections

Clinical features Primary infection(n = 36) Past infection(n = 92) No infection(n = 111)
Age (months) 41.8 ± 32.3* 60.3 ± 37.7** 37.7 ± 29.5*
Male/female patients 17/19 57/35 74/37
Length of stay (days) 9.1 ± 4.1 7.8 ± 2.5* 8.9 ± 3.9
Fever 31 (86.1%) 83 (90.2%) 97 (87.4%)
Cough 30 (83.3%) 65 (70.6%) 85 (76.6%)
Rash 14 (38.9%)** 17 (18.5%)* 16 (14.4%)*
Lymphadenopathy 11 (30.6%) 33 (35.9%) 29 (1.8%)*
Pharyngitis 26 (72.2%) 74 (80.4%) 79 (71.2%)
Palatal petechiae 3 (8.3%) 16 (17.4) 20 (18.0%)
Abnormal chest X ray 7/20 (35.0%)** 40/46 (87.0%)* 49/61 (80.3%)*
Hepatomegaly   5 (5.4%) 7 (6.3%)
Splenomegaly 0 (0.0%) 3 (3.3%) 1 (0.9%)
ALC >10% 3/21 (14.3%) 9/51 (17.7%) 13/70 (18.6%)
Elevated ESR 10/21 (47.6%) 35/67 (53.2%) 30/63 (47.6%)
Elevated CRP 10/21 (47.6%) 33/68 (48.5%) 42/73 (57.5%)
ALF 4/18 (22.2%) 3/24 (12.5%) 12/33 (36.4%)
  1. IM, infectious mononucleosis; Non-IM, patients without IM; ALC, atypical lymphocytes; ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; ALF, abnormal liver function (alanine aminotransferase or aspartate aminotransferase levels >46 U/L). P < 0.05 between * and **.