Burden Estimates for the 2013-2014 Influenza Season
The overall burden of influenza for the 2013-2014 season was an estimated 30 million influenza illnesses, 13 million influenza-associated medical visits, 347,000 influenza-related hospitalizations, and 38,000 flu-associated deaths (Table: Estimated Influenza Disease Burden, by Season — United States, 2010-11 through 2017-18 Influenza Seasons).
| Symptomatic Illnesses | Medical Visits | Hospitalizations | Deaths | |||||
|---|---|---|---|---|---|---|---|---|
| Age group | Estimate | 95% Cr I | Estimate | 95% Cr I | Estimate | 95% Cr I | Estimate | 95% Cr I |
| 0-4 yrs | 2,525,568 | (2,193,604, 2,950,196) | 1,692,131 | (1,426,310, 2,024,015) | 17,607 | (15,293, 20,567) | 74 | (0, 216) |
| 5-17 yrs | 3,983,742 | (3,433,463, 4,695,861) | 2,071,546 | (1,725,701, 2,506,930) | 10,923 | (9,414, 12,876) | 56 | (0, 240) |
| 18-49 yrs | 13,038,323 | (11,459,968, 15,201,283) | 4,824,179 | (3,999,013, 5,949,705) | 73,184 | (64,325, 85,325) | 3,422 | (2,419, 5,330) |
| 50-64 yrs | 8,484,977 | (7,462,475, 9,864,079) | 3,648,540 | (3,013,667, 4,473,016) | 89,981 | (79,137, 104,606) | 5,964 | (4,405, 8,935) |
| 65+ yrs | 1,707,384 | (1,494,059, 2,039,988) | 956,135 | (795,414, 1,191,320) | 155,217 | (135,824, 185,453) | 28,414 | (23,222, 39,030) |
| All ages | 29,739,994 | (27,857,029, 32,700,078) | 13,192,531 | (12,102,484, 14,799,134) | 346,912 | (324,890, 385,289) | 37,930 | (33,023, 49,640) |
| Illness rate | Medical visit rate | Hospitalization rate | Mortality rate | |||||
|---|---|---|---|---|---|---|---|---|
| Age group | Estimate | 95% Cr I | Estimate | 95% Cr I | Estimate | 95% Cr I | Estimate | 95% Cr I |
| 0-4 yrs | 12,711.7 | (11,040.8, 14,848.9) | 8,516.8 | (7,178.9, 10,187.3) | 88.6 | (77.0, 103.5) | 0.4 | (0.0, 1.1) |
| 5-17 yrs | 7,416.1 | ( 6,391.7, 8,741.7) | 3,856.4 | (3,212.5, 4,666.9) | 20.3 | (17.5, 24.0) | 0.1 | (0.0, 0.4) |
| 18-49 yrs | 9,589.6 | ( 8,428.7, 11,180.4) | 3,548.1 | (2,941.2, 4,376.0) | 53.8 | (47.3, 62.8) | 2.5 | (1.8, 3.9) |
| 50-64 yrs | 13,712.9 | (12,060.4, 15,941.8) | 5,896.6 | (4,870.5, 7,229.0) | 145.4 | (127.9, 169.1) | 9.6 | (7.1, 14.4) |
| 65+ yrs | 3,819.3 | ( 3,342.1, 4,563.3) | 2,138.8 | (1,779.3, 2,664.9) | 347.2 | (303.8, 414.8) | 63.6 | (51.9, 87.3) |
Page last reviewed: October 25, 2018