Burden Estimates for the 2016-2017 Influenza Season
The overall burden of influenza for the 2016-2017 season was an estimated 29 million influenza illnesses, 14 million influenza-associated medical visits, 500,000 influenza-related hospitalizations, and 38,000 influenza-associated deaths (Table: Estimated Influenza Disease Burden, by Season — United States, 2010-11 through 2017-18 Influenza Seasons).
Table 1: Estimated influenza disease burden, by age group — United States, 2016-2017 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 |
2,381,218 |
(1,390,236, 12,601,859) |
1,595,416 |
(924,357, 8,525,518) |
16,601 |
(9,692, 87,855) |
126 |
(0, 300) |
| 5-17 yrs |
6,452,110 |
(4,260,828, 13,196,404) |
3,355,097 |
(2,191,820, 6,869,053) |
17,691 |
(11,683, 36,183) |
125 |
(0, 418) |
| 18-49 yrs |
9,292,804 |
(6,652,894, 15,421,148) |
3,438,338 |
(2,370,723, 5,813,710) |
52,161 |
(37,343, 86,559) |
1,365 |
(858, 2,020) |
| 50-64 yrs |
7,448,184 |
(5,301,910, 13,098,914) |
3,202,719 |
(2,224,600, 5,618,648) |
78,986 |
(56,225, 138,910) |
3,780 |
(2,880, 4,913) |
| 65+ yrs |
3,646,206 |
(2,367,196, 7,315,271) |
2,041,876 |
(1,297,567, 4,155,698) |
331,473 |
(215,200, 665,025) |
32,833 |
(23,243, 55,297) |
| All ages |
29,220,523 |
(24,730,258, 44,863,689) |
13,633,446 |
(11,367,031, 22,513,028) |
496,912 |
(383,061, 857,458) |
38,230 |
(28,582, 60,686) |
Table 2: Estimated rates of influenza disease outcomes, per 100,000 by age group — United States, 2016-2017 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 |
11,949.70 |
(6,976.6, 63,240.0) |
8,006.30 |
(4,638.7, 42,783.7) |
83.3 |
(48.6, 440.9) |
0.6 |
(0.0, 1.5) |
| 5-17 yrs |
12,011.70 |
(7,932.3, 24,567.3) |
6,246.10 |
(4,080.4, 12,787.9) |
32.9 |
(21.7, 67.4) |
0.2 |
(0.0, 0.8) |
| 18-49 yrs |
6,786.10 |
(4,858.3, 11,261.3) |
2,510.90 |
(1,731.2, 4,245.5) |
38.1 |
(27.3, 63.2) |
1 |
(0.6, 1.5) |
| 50-64 yrs |
11,766.10 |
(8,375.6, 20,692.7) |
5,059.40 |
(3,514.3, 8,875.9) |
124.8 |
(88.8, 219.4) |
6 |
(4.5, 7.8) |
| 65+ yrs |
7,404.30 |
(4,807.1, 14,855.1) |
4,146.40 |
(2,635.0, 8,439.0) |
673.1 |
(437.0, 1,350.5) |
66.7 |
(47.2, 112.3) |
