Comparison of the age profile in novel swine influenza and our sample of seasonal influenza
| Age category | H1N1 novel swine flu* (n = 642) (%) | Sample studied† (n = 97/566) (%) |
| <24 months | 3 | 11 |
| 2–4 years | 5 | 10 |
| 5–9 years | 12 | 14 |
| 10–18 years | 40 | 12 |
| 19+ years | 40 | 52 |
*Denominator not reported. From Andreasen et al.10
†Age missing in two. Less than 100% because of rounding.