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).
| 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) |
| 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) |
Page last reviewed: October 25, 2018
