Table 1

Symptoms and diagnoses by age groups
Age groups (years)
<1 (n = 12) 1-5 (n = 29) 6-17 (n = 53) <18 (n = 94)
Symptoms
Cough 8 (67%) 23 (79%) 44 (83%) 75 (80%)
Fever 10 (83%) 25 (86%) 38 (72%) 73 (78%)
Rhinorrhea 6 (50%) 18 (62%) 24 (45%) 48 (51%)
Food/drink refusal 6 (50%) 14 (48%) 16 (30%) 36 (38%)
Headache 0 (0%) 2 (7%) 22 (42%) 24 (26%)
Vomiting 0 (0%) 6 (21%) 15 (28%) 21 (22%)
Tachypnea 3 (25%) 2 (7%) 8 (15%) 13 (14%)
Conjunctivitis 1 (8%) 4 (14%) 5 (9%) 10 (11%)
Sore throat 0 (0%) 0 (0%) 9 (17%) 9 (10%)
Diarrhea 2 (17%) 3 (10%) 3 (6%) 8 (9%)
Myalgia 0 (0%) 1 (3%) 7 (13%) 8 (9%)
Diagnoses
Upper airway infection 10 (83%) 26 (90%) 48 (91%) 84 (89%)
Bronchitis 5 (42%) 4 (14%) 11 (21%) 20 (21%)
  - of these obstructive 5 (42%) 0 (0%) 4 (8%) 9 (10%)
Pneumonia 3 (25%) 6 (21%) 7 (13%) 16 (17%)
  -of these secondary bacterial 0 (0%) 0 (0%) 1 (2%) 1 (1%)
Seizure 0 (0%) 4 (14%) 3 (6%) 7 (7%)
Laryngitis 1 (8%) 0 (0%) 5 (9%) 6 (6%)
Otitis media 2 (17%) 1 (3%) 0 (0%) 3 (3%)
Status asthmaticus 0 (0%) 0 (0%) 1 (2%) 1 (1%)
ARDS 0 (0%) 0 (0%) 1 (2%) 1 (1%)

Comparison of symptoms at presentation and diagnoses of 94 patients with pandemic influenza A (H1N1) 2009, by age group.

Wieching et al.

Wieching et al. BMC Research Notes 2012 5:304   doi:10.1186/1756-0500-5-304

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