Table 1.
Estimated Respiratory Syncytial Virus Hospitalization Rates Among Canadian Adults Aged ≥50 Years
| Virus | Age Group, y | Seasonal Incidence Rates per 100 000 Population (95% CI)a | |||
|---|---|---|---|---|---|
| 2012–2013 | 2013–2014 | 2014–2015 | 2012–2015 | ||
| RSV (total) | 50–59 | 9.3 (3.3–15.3) | 11.8 (6.6–16.9) | 8.2 (4.2–12.1) | 13.9 (9.9–17.9) |
| 60–69 | 46.6 (30.9–62.4) | 36.7 (25.6–47.8) | 51.1 (29.8–72.5) | 43.7 (34.2–51.2) | |
| 70–79 | 105.4 (70.8–140.0) | 66.4 (50.0–87.9) | 103.7 (63.8–143.6) | 88.6 (71.0–106.1) | |
| ≥80 | 254.0 (179.9–328.1) | 173.9 (124.9–222.9) | 487.4 (369.3–605.5) | 282.5 (238.2–326.8) | |
| 50–64 | 32.0 (20.3–43.8) | 27.3 (18.7–35.9) | 28.1 (17.0–37.5) | 33.6 (26.9–40.3) | |
| ≥50 | 63.9 (52.6–75.1) | 47.2 (39.5–54.8) | 54.5 (62.3–88.4) | 64.8 (58.4–71.1) | |
| ≥65 | 80.7 (64.5–96.9) | 57.0 (46.3–67.7) | 68.6 (83.2–123.6) | 80.8 (71.7–89.9) | |
| ≥60 | 101.6 (91.0–112.2) | 105.5 (86.2–124.8) | 73.1 (60.4–85.8) | 145.5 (118.7–172.4) | |
Abbreviations: CI, confidence interval; RSV, respiratory syncytial virus.
a
For incidence calculations for age groups, the proportion of RSV attributed to community-acquired pneumonia by the Canadian Immunization Research Network’s Serious Outcomes Surveillance Network from November to May of each year was applied to census data during this period, and the seasonal proportions of individuals hospitalized with an acute respiratory infection from Canadian Institute for Health Information Discharge Abstract Database data (excluding the provinces of British Columbia and Québec).