Table 3.
Population RSV hospitalization burden estimates based on total acute respiratory infection (ARI) hospitalizations and ARI-related* hospitalizations.
| Time period or group | Total ARI hospitalizations |
ARI-related hospitalizations |
||||
|---|---|---|---|---|---|---|
| Calculated RSV cases in county hospitals** (a) | RSV cases per 100,000 population (a/n)*100,000 | Calculated RSV cases in county hospitals** (b) | RSV cases per 100,000 population (b/n)*100,000 | |||
| Burden of RSV for Allegheny County adult population (≥18 years) † | ||||||
| (a) | Total adults, n = 984,996 | (b) | Total adults, n = 984,996 | |||
| 9/2015–8/2016 | 2321.6 | 236 | - | 1456.5 | 148 | - |
| Fall 2015 | 43.2 | 4 | - | 27.0 | 3 | - |
| Winter 2015 | 1019.2 | 103 | - | 618.3 | 63 | - |
| Spring 2016 | 652.4 | 66 | - | 391.6 | 40 | - |
| Summer 2016 | 57.8 | 6 | - | 39.3 | 4 | - |
| 9/2016–8/2017 | 3758.5 | 382 | - | 2364.2 | 240 | - |
| Fall 2016 | 296.2 | 30 | - | 190.6 | 19 | - |
| Winter 2016 | 1427.5 | 145 | - | 812.6 | 83 | - |
| Spring 2017 | 906.6 | 92 | - | 571.9 | 58 | - |
| Summer 2017 | 0.0 | 0 | - | 0.0 | 0 | - |
| 9/2017–8/2018 | 3465.0 | 352 | - | 2231.8 | 227 | - |
| Fall 2017 | 247.3 | 25 | - | 163.9 | 17 | - |
| Winter 2017 | 1223.2 | 124 | - | 705.8 | 72 | - |
| Spring 2018 | 1003.0 | 102 | - | 643.3 | 65 | - |
| Summer 2018 | 173.5 | 18 | - | 122.4 | 12 | - |
| 3-year average | 3181.7 | 323 | - | 2017.5 | 205 | - |
| Burden of RSV for Allegheny County immunocompetent adult population (≥18 years) † | ||||||
| (a) | Total adults n = 984,996 | Immunocompetent adults n = 955,447 | (b) | Total adults n = 984,996 | Immunocompetent adults n = 955,447 | |
| 9/2015–8/2016 | 1923.9 | 195 | 201 | 1215.3 | 123 | 127 |
| 9/2016–8/2017 | 3298.4 | 335 | 345 | 2086.0 | 212 | 218 |
| 9/2017–8/2018 | 3054.6 | 310 | 320 | 1976.3 | 201 | 207 |
| 3-year average | 2759.0 | 280 | 289 | 1759.2 | 179 | 184 |
| Burden of RSV for Allegheny County non-pregnant adult population (≥18 years) † | ||||||
| (a) | Total adults n = 984,996 | Non-pregnant adults n = 971,822 | (b) | Total adults n = 984,996 | Non-pregnant adults n = 971,822 | |
| 9/2015–8/2016 | 2285.9 | 232 | 235 | 1419.1 | 144 | 146 |
| 9/2016–8/2017 | 3664.6 | 372 | 377 | 2284.0 | 232 | 235 |
| 9/2017–8/2018 | 3393.5 | 345 | 349 | 2163.9 | 220 | 223 |
| 3-year average | 3114.6 | 316 | 320 | 1955.7 | 199 | 201 |
| Burden of RSV for Allegheny County adult population (18–64 years) † | ||||||
| (a) | Total adults n = 984,996 | Adults 18–64 years n = 753,948 | (b) | Total adults n = 984,996 | Adults 18–64 years n = 753,948 | |
| 9/2015–8/2016 | 587.7 | 60 | 78 | 381.4 | 39 | 51 |
| 9/2016–8/2017 | 1176.7 | 119 | 156 | 767.9 | 78 | 102 |
| 9/2017–8/2018 | 903.5 | 92 | 120 | 603.7 | 61 | 80 |
| 3-year average | 889.3 | 90 | 118 | 584.4 | 59 | 78 |
| Burden of RSV for Allegheny County adult population (≥65 years) † | ||||||
| (a) | Total adults n = 984,996 | Adults ≥ 65 years n = 231,049 | (b) | Total adults n = 984,996 | Adults ≥ 65 years n = 231,049 | |
| 9/2015–8/2016 | 1619.2 | 164 | 701 | 993.4 | 101 | 430 |
| 9/2016–8/2017 | 2485.6 | 252 | 1076 | 1526.8 | 155 | 661 |
| 9/2017–8/2018 | 2403.8 | 244 | 1040 | 1513.0 | 154 | 655 |
| 3-year average | 2169.5 | 220 | 939 | 1344.4 | 136 | 582 |
| Burden of RSV for Allegheny County immunosuppressed† population (≥18 years)† | ||||||
| (a) | Total adults n = 984,996 | Immunosuppressed adults n = 29,550 | (b) | Total adults n = 984,996 | Immunosuppressed adults n = 29,550 | |
| 9/2015–8/2016 | 380.7 | 39 | 1288 | 228.7 | 23 | 774 |
| 9/2016–8/2017 | 461.7 | 47 | 1562 | 279.3 | 28 | 945 |
| 9/2017–8/2018 | 411.4 | 42 | 1392 | 256.1 | 26 | 867 |
| 3-year average | 417.9 | 42 | 1414 | 254.70 | 26 | 862 |
| Burden of RSV for Allegheny County pregnant population (20–44 years) † | ||||||
| (a) | Total adults n = 984,996 | Pregnant women n = 13,174 | (b) | Total adults n = 984,996 | Pregnant women n = 13,174 | |
| 9/2015–8/2016 | 0.0 | 0 | 0 | 0.0 | 0 | 0 |
| 9/2016–8/2017 | 106.5 | 11 | 808 | 96.4 | 10 | 732 |
| 9/2017–8/2018 | 56.8 | 6 | 431 | 51.6 | 5 | 392 |
| 3-year average | 81.7 | 8 | 620 | 74.0 | 8 | 562 |
*
ARI-related hospitalization = those hospitalized with a high-risk condition exacerbated by an ARI.
**
See Appendix 2 for equations 1–5
†
See Appendix 2 for equations 6 & 7
‡
Includes solid organ transplants, n estimated at 3% of the adult population.