TABLE 1.
Estimated average annual RSV‐ and seasonal a influenza‐attributable hospitalisation rates per 100,000 population and counts (95% confidence intervals), by principal diagnosis and age group, from 2009 to 2017 for RSV and 2010 to 2017 for seasonal influenza, Australia
| Principal diagnosis | Age group (in years) | |||||||
|---|---|---|---|---|---|---|---|---|
| 0–4 | 5–14 | 15–44 | 45–64 | 65–74 | ≥75 | All ages b | ||
| Rate | ||||||||
| Bronchiolitis | RSV | 466.9 (418.2, 525.4) | n/a | n/a | n/a | n/a | n/a | n/a |
| Seasonal influenza | −17.5 (−33.6, −4.7) | n/a | n/a | n/a | n/a | n/a | n/a | |
| P&I | RSV | 87.2 (45.5, 127.1) | 4.3 (−12.7, 21.6) | 3.0 (−6.8, 12.6) | −6.8 (−19.6, 5.8) | −4.9 (−44.9, 32.3) | 128.0 (−26.8, 291.9) | 13.6 (−2.2, 29.3) |
| Seasonal influenza | 89.4 (76.2, 100.3) | 29.5 (24.5, 34.8) | 25.9 (22.6, 28.8) | 45.8 (41.5, 49.2) | 88.9 (74.5, 100.2) | 326.2 (270.1, 375.0) | 60.0 (53.7, 64.4) | |
| ARI | RSV | 589.8 (466.8, 719.9) | −3.6 (−30.2, 24.0) | 3.8 (−10.3, 17.5) | 3.5 (−17.7, 23.9) | 33.5 (−31.9, 103.8) | 256.4 (5.3, 487.4) | 59.7 (31.7, 86.2) |
| Seasonal influenza | 95.1 (57.2, 129.1) | 41.3 (32.9, 50.0) | 31.8 (27.1, 36.0) | 68.9 (61.5, 75.0) | 150.3 (125.0, 171.4) | 483.3 (397.5, 550.4) | 85.2 (147.4, 179.8) | |
| Respiratory | RSV | 464.2 (285.9, 641.2) | −72.3 (−128.0, −19.1) | 7.2 (−13.8, 28.3) | 8.8 (−21.9, 38.5) | 64.4 (−16.7, 153.8) | 359.7 (79.0, 627.5) | 54.8 (20.1, 88.8) |
| Seasonal influenza | 57.5 (5.3, 107.7) | 26.3 (10.4, 43.9) | 33.9 (26.7, 40.5) | 78.1 (67.6, 87.2) | 165.2 (135.1, 190.5) | 521.6 (420.9, 600.0) | 87.8 (74.5, 97.7) | |
| Count | ||||||||
| Bronchiolitis | RSV | 7017 (6285, 7820) | n/a | n/a | n/a | n/a | n/a | n/a |
| Seasonal influenza | −255 (−497, −69) | n/a | n/a | n/a | n/a | n/a | n/a | |
| P&I | RSV | 1321 (689, 1907) | 125 (−365, 614) | 290 (−661, 1208) | −390 (−1122, 331) | −91 (−836, 634) | 1903 (−446, 4293) | 3159 (−501, 6720) |
| Seasonal influenza | 1373 (1184, 1540) | 862 (724, 1016) | 2543 (2248, 2827) | 2664 (2441, 2859) | 1732 (1467, 1951) | 4981 (4174, 5725) | 14,155 (12,842, 15,189) | |
| ARI | RSV | 8934 (7069, 10,799) | −104 (−868, 682) | 373 (−1000, 1677) | 199 (−1013, 1357) | 625 (−594, 1914) | 3810 (79, 7169) | 13,837 (7345, 19,747) |
| Seasonal influenza | 1461 (889, 1982) | 1206 (974, 1461) | 3124 (2699, 3535) | 4004 (3617, 4363) | 2927 (2462, 3338) | 7380 (6143, 8404) | 20 102 (17,909, 21,849) | |
| Respiratory | RSV | 7031 (4331, 9618) | −2081 (−3682, −544) | 698 (−1338, 2713) | 505 (−1253, 2183) | 1199 (−312, 2836) | 5346 (1175, 9230) | 12,698 (4679, 20,334) |
| Seasonal influenza | 883 (82, 1654) | 768 (307, 1283) | 3330 (2656, 3983) | 4540 (3975, 5072) | 3217 (2662, 3710) | 7965 (6505, 9161) | 20,702 (17,851, 23,025) | |
Abbreviations: ARI, acute respiratory infection; n/a, not available; P&I, pneumonia and influenza; RSV, respiratory syncytial virus.
a
Calculation for the annual average seasonal influenza‐attributable hospitalisation excluded the pandemic year 2009.
b
The rate refers to the crude rate. Calculation for the all‐ages estimates included both significant and non‐significant values.