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).
Estimated influenza disease burden, by age group — United States, 2014-2015 influenza season
|
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) |
Estimated rates of influenza-associated disease outcomes, per 100,000, by age group — United States, 2014-2015 influenza season
|
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) |
