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Table 1 Demographic and clinical characteristics of 133 patients, admitted to Bambino Gesù Children’s Hospital, Rome, Italy, during the influenza season 2012–2013, positive for FLUA and B by viral type and subtype

From: Clinical features of children hospitalized with influenza A and B infections during the 2012–2013 influenza season in Italy

  FLU A FLU B
  H1N1 (N = 54) H3N2 (N = 8) Yamagata lineage (N = 65) Victoria lineage (N = 6)
Sex N (%) N (%) N (%) N (%)
 Males 26 (19.55) 3 (2.26) 42 (31.58) 4 (3.01)
 Females 28 (21.05) 5 (3.76) 23 (17.29) 2 (1.50)
Nationality
 Italian 49 (36.84) 8 (6.02) 52 (39.1) 5 (3.76)
 European 2 (1.50) 0 5 (3.76) 0
 Other 3 (2.26) 0 8 (6.01) 1 (0.75)
Age (years)
  < 1 27 (20.3) 2 (1.50) 10 (7.52) 1 (0.75)
 1–2 12 (9.02) 1 (0.75) 17 (12.79) 2 (1.50)
 3–5 10 (7.52) 1 (0.75) 22 (16.55) 2 (1.50)
 6–10 2 (1.50) 2 (1.50) 11 (8.28) 0
  > 11 3 (2.26) 2 (1.50) 5 (3.76) 1 (0.75)
Clinical symptoms
 Fever >38 °C 37 (27.82) 4 (3.01) 27 (20.3) 4 (3.01)
 Fever <38 °C 17 (12.79) 4 (3.01) 38 (28.57) 2 (1.50)
 Apnea 7 (5.26) 0 2 (1.50) 0
 Respiratory simtomps 29 (21.80) 3 (2.26) 21 (15.79) 3 (2.26)
Outcome
 Fever 31 (23.31) 7 (5.26) 39 (29.32) 4 (3.01)
 Otitis 2 (1.50) 0 3 (2.26) 0
 Laryngitis 1 (0.75) 0 1 (0.75) 0
 Pharingitis 1 (0.75) 0 2 (1.50) 0
 Bronchitis 4 (3.01) 0 5 (3.76) 1 (0.75)
 Bronchiolitis 7 (5.26) 1 (0.75) 1 (0.75) 1 (0.75)
 Bronchopneumonia 1 (0.75) 0 0 0
 Pneumonia 7 (5.26) 0 11 (8.28) 0
 Myositis 0 0 2 (1.50) 0
 Pertussis 0 0 1 (0.75) 0
Underlying disease
 None 44 (33.08) 3 (2.26) 57 (42.86) 4 (3.01)
 Acquired 2 (1.50) 2 (1.50) 7 (5.26) 0
 Congenital 5 (3.76) 1 (0.75) 0 (0.00) 2 (1.50)
 Genetic 3 (2.26) 2 (1.50) 1 (0.75) 0
Units
 Emergency 10 (7.52) 0 27 (20.30) 3 (2.26)
 Pediatrics 30 (22.56) 4 (3.01) 24 (18.05) 1 (0.75)
 Surgery 2 (1.50) 0 0 0
 ICUa 3 (2.26) 1 (0.75) 1 (0.75) 1 (0.75)
 IIFUb 10 (7.52) 2 (1.5) 13 (9.77) 1 (0.75)
Length of stay (days)
 Median 5 5 3 3
  1. aIntensive care units
  2. bImpaired immune function units