Table 2 Estimated annual incidence of influenza-like illness by age and by year
Age | Year 1 | Year 2 | Year 3 | Year 4 | Total |
|---|---|---|---|---|---|
Incidence per 1,000 population (95 % confidence interval) | |||||
5–9 years | 105 (92–118) | 92 (80–104) | 76 (65–87) | 86 (75–98) | 92 (86–98) |
10–19 years | 81 (70–92) | 78 (67–89) | 85 (73–96) | 75 (64–85) | 80 (75–85) |
20–29 years | 64 (55–73) | 52 (44–61) | 52 (43–60) | 65 (56–75) | 59 (55–64) |
30–39 years | 48 (39–58) | 42 (33–51) | 60 (50–71) | 44 (35–53) | 49 (44–54) |
40–49 years | 32 (23–41) | 19 (12–26) | 26 (18–34) | 33 (24–41) | 28 (24–33) |
>50 years | 12 (6–17) | 33 (24–43) | 14 (8–20) | 30 (21–38) | 21 (17–24) |
All age groups | 63 (59–67) | 57 (53–61) | 56 (52–60) | 59 (55–64) | 60 (58–62) |