Burden Estimates for the 2012-2013 Influenza Season
The overall burden of influenza for the 2012-2013 season was an estimated 34 million influenza illnesses, 16 million influenza-associated medical visits, 571,000 influenza-related hospitalizations, and 43,000 flu-associated deaths (Estimated Influenza Disease Burden, by Season — United States, 2010-11 through 2017-18 Influenza Seasons).
Estimated influenza disease burden, by age group — United States, 2012-2013 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 |
3,563,980 |
(3,057,118, 4,268,167) |
2,387,867 |
(1,994,497, 2,915,341) |
24,846 |
(21,313, 29,756) |
291 |
(69, 705) |
| 5-17 yrs |
6,672,657 |
(5,711,369, 7,969,110) |
3,469,781 |
(2,873,386, 4,239,106) |
18,296 |
(15,660, 21,851) |
870 |
(381, 2,119) |
| 18-49 yrs |
11,391,195 |
(9,683,756, 14,278,920) |
4,214,742 |
(3,406,874, 5,548,686) |
63,939 |
(54,355, 80,148) |
2,072 |
(1,072, 5,040) |
| 50-64 yrs |
7,861,032 |
(6,737,366, 9,662,138) |
3,380,244 |
(2,746,841, 4,328,341) |
83,364 |
(71,448, 102,464) |
4,170 |
(2,774, 7,198) |
| 65+ yrs |
4,190,308 |
(3,634,176, 5,203,875) |
2,346,572 |
(1,954,820, 3,017,303) |
380,937 |
(330,380, 473,080) |
35,167 |
(27,928, 49,636) |
| All ages |
33,679,171 |
(31,711,102, 37,994,457) |
15,799,206 |
(14,698,757, 17,986,517) |
571,382 |
(524,174, 673,678) |
42,570 |
(35,785, 58,386) |
Estimated rates of influenza-associated disease outcomes, per 100,000, by age group — United States, 2012-2013 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 |
17,820.5 |
(15,286.1, 21,341.5) |
11,939.7 |
(9,972.8, 14,577.2) |
124.2 |
(106.6, 148.8) |
1.5 |
(0.3, 3.5) |
| 5-17 yrs |
12,419.2 |
(10,630.0, 14,832.1) |
6,458.0 |
(5,347.9, 7,889.8) |
34.1 |
(29.1, 40.7) |
1.6 |
(0.7, 3.9) |
| 18-49 yrs |
8,383.6 |
(7,127.0, 10,508.9) |
3,101.9 |
(2,507.4, 4,083.7) |
47.1 |
(40.0, 59.0) |
1.5 |
(0.8, 3.7) |
| 50-64 yrs |
12,852.1 |
(11,015.0, 15,796.7) |
5,526.4 |
(4,490.8, 7,076.4) |
136.3 |
(116.8, 167.5) |
6.8 |
(4.5, 11.8) |
| 65+ yrs |
9,712.1 |
(8,423.1, 12,061.3) |
5,438.8 |
(4,530.8, 6,993.3) |
882.9 |
(765.7, 1,096.5) |
81.5 |
(64.7, 115.0) |
