Burden Estimates for the 2014-2015 Influenza Season
The overall burden of influenza for the 2014-2015 season was an estimated 30 million influenza illnesses, 14 million influenza-associated medical visits, 591,000 influenza-related hospitalizations, and 51,000 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 | 3,207,314 | (2,755,504, 3,808,657) | 2,148,900 | (1,794,219, 2,614,247) | 22,360 | (19,210, 26,552) | 396 | (171, 752) |
| 5-17 yrs | 6,388,401 | (5,487,505, 7,554,676) | 3,321,969 | (2,766,223, 4,055,360) | 17,516 | (15,046, 20,714) | 407 | (149, 799) |
| 18-49 yrs | 8,606,083 | (7,750,712, 9,693,873) | 3,184,251 | (2,649,182, 3,815,288) | 48,306 | (43,505, 54,412) | 985 | (552, 1,705) |
| 50-64 yrs | 7,283,766 | (6,374,888, 8,485,648) | 3,132,019 | (2,568,790, 3,877,954) | 77,242 | (67,604, 89,988) | 4,780 | (3,444, 7,014) |
| 65+ yrs | 4,679,888 | (4,072,076, 5,570,118) | 2,620,737 | (2,159,437, 3,246,219) | 425,444 | (370,189, 506,374) | 44,808 | (37,403, 57,181) |
| All ages | 30,165,452 | (28,571,644, 32,660,556) | 14,407,876 | (13,330,862, 15,907,256) | 590,869 | (535,829, 675,052) | 51,376 | (44,163, 64,254) |
| 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 | 16,135.9 | ( 13,862.9, 19,161.2) | 10,811.1 | (9,026.7, 13,152.2) | 112.5 | (96.6, 133.6) | 2.0 | (0.9, 3.8) |
| 5-17 yrs | 11,895.0 | ( 10,217.5, 14,066.5) | 6,185.4 | (5,150.6, 7,550.9) | 32.6 | (28.0, 38.6) | 0.8 | (0.3, 1.5) |
| 18-49 yrs | 6,310.3 | ( 5,683.1, 7,107.9) | 2,334.8 | (1,942.5, 2,797.5) | 35.4 | (31.9, 39.9) | 0.7 | (0.4, 1.3) |
| 50-64 yrs | 11,626.4 | (10,175.7, 13,544.9) | 4,999.4 | (4,100.3, 6,190.0) | 123.3 | (107.9, 143.6) | 7.6 | (5.5, 11.2) |
| 65+ yrs | 10,120.2 | ( 8,805.8, 12,045.3) | 5,667.3 | (4,669.7, 7,019.9) | 920.0 | (800.5, 1,095.0) | 96.9 | (80.9, 123.7) |
Page last reviewed: October 25, 2018
