Average seasonal RSV-attributable burden of hospitalisations* (HES) in the UK (1997–2009), by outcome and age
| Respiratory outcome* | Age | N | Episodes/100 000 population (range) | Per cent of all events attributable to RSV† | RSV: influenza ratio‡ |
|---|---|---|---|---|---|
| Respiratory disease | <6 months | 13 862 | 4184 (3099–5019) | 42.2 | 21.1:1 |
| 6–23 months | 12 862 | 1272 (943–1528) | 19.5 | 9.3:1 | |
| 2–4 years | 2436 | 114 (90–145) | 5.1 | 1.9:1 | |
| 5–17 years | 0§ | 0§ | 0§ | 0:1 | |
| Pneumonia and influenza | <6 months | 198 | 60 (44–71) | 26.9 | 3.2:1 |
| 6–23 months | 1086 | 107 (80–130) | 27.8 | 4.5:1 | |
| 2–4 years | 1033 | 48 (37–59) | 25.7 | 7.8:1 | |
| 5–17 years | 429 | 4 (3–5) | 12.3 | 1.2:1 | |
| Bronchitis and bronchiolitis | <6 months | 12 458 | 3760 (2775–4494) | 79.3 | 43.3:1 |
| 6–23 months | 7598 | 752 (547–886) | 58.7 | 70.2:1 | |
| 2–4 years | 1260 | 59 (46–75) | 29.8 | 7.2:1 | |
| 5–17 years | 269 | 3 (2–4) | 9.1 | 1.1:1 |
*Outcomes refer to the ‘primary’ cause for hospitalisation for HES.
†Per cent of RSV-attributable events among all events due to outcome.
†Ratio of proportions/100 000 RSV/(influenza A+B).
§On-statistically significant negative estimates (95% CIs included 0) suppressed and expressed as 0.
N=average seasonal number of specified RSV-attributable events for each outcome.
Range=range of estimates per season.
HES, hospital episode statistics; RSV, respiratory syncytial virus.