Burden Estimates for the 2010-2011 Influenza Season
The overall burden of influenza for the 2010-2011 season was an estimated 21 million influenza illnesses, 10 million influenza-associated medical visits, 290,000 influenza-related hospitalizations, and 37,000 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, 2010-2011 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 |
2,776,311 |
(2,286,712, 3,521,500) |
1,860,128 |
(1,497,299, 2,411,113) |
19,355 |
(15,942, 24,550) |
200 |
(0, 509) |
| 5-17 yrs |
4,435,345 |
(3,609,151, 5,847,156) |
2,306,379 |
(1,847,898, 3,083,851) |
12,161 |
(9,896, 16,032) |
152 |
(0, 1,498) |
| 18-49 yrs |
7,410,066 |
(6,149,320, 9,526,927) |
2,741,724 |
(2,203,691, 3,638,292) |
41,593 |
(34,516, 53,475) |
5,240 |
(3,682, 8,341) |
| 50-64 yrs |
4,843,828 |
(4,031,400, 6,493,256) |
2,082,846 |
(1,662,186, 2,869,122) |
51,367 |
(42,752, 68,859) |
5,937 |
(4,254, 9,385) |
| 65+ yrs |
1,820,570 |
(1,591,020, 2,395,285) |
1,019,519 |
(851,630, 1,383,748) |
165,506 |
(144,638, 217,753) |
25,128 |
(19,368, 42,189) |
| All ages |
21,286,119 |
(19,897,625, 24,938,539) |
10,010,597 |
(9,269,451, 11,834,528) |
289,983 |
(270,164, 351,777) |
36,656 |
(32,129, 51,3933) |
Estimated rates of influenza disease outcomes, per 100,000 by age group — United States, 2010-2011 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 |
13,743.2 |
(11,319.6, 17,432.0) |
9,207.9 |
(7,411.9, 11,935.4) |
95.8 |
(78.9, 121.5) |
1.0 |
(0.0, 2.5) |
| 5-17 yrs |
8,216.6 |
( 6,686.1, 10,832.1) |
4,272.6 |
(3,423.3, 5,712.9) |
22.5 |
(18.3, 29.7) |
0.3 |
(0.0, 1.2) |
| 18-49 yrs |
5,468.1 |
( 4,537.7, 7,030.2) |
2,023.2 |
(1,626.2, 2,684.8) |
30.7 |
(25.5, 39.5) |
3.9 |
(2.7, 6.2) |
| 50-64 yrs |
8,240.5 |
( 6,858.4, 11,046.5) |
3,543.4 |
(2,827.8, 4,881.0) |
87.4 |
(72.7, 117.1) |
10.1 |
(6.8, 17.8) |
| 65+ yrs |
4,521.1 |
( 3,951.1, 5,948.4) |
2,531.8 |
(2,114.9, 3,436.3) |
411.0 |
(359.2, 540.8) |
62.4 |
(50.5, 95.2) |
