| Table 1: Estimated Flu Disease Burden, by Season — United States, 2010-2011 through 2021-2022** Flu Seasons | ||||||||
| Symptomatic Illnesses | Medical Visits | Hospitalizations | Deaths | |||||
| Season | Estimate | 95% U I | Estimate | 95% U I | Estimate | 95% U I | Estimate | 95% U I |
| 2010-2011 | 21,000,000 | (20,000,000 – 25,000,000) | 10,000,000 | (9,300,000 – 12,000,000) | 290,000 | (270,000 – 350,000) | 37,000 | (32,000 – 51,000) |
| 2011-2012 | 9,300,000 | (8,700,000 – 12,000,000) | 4,300,000 | (4,000,000 – 5,600,000) | 140,000 | (130,000 – 190,000) | 12,000 | (11,000 – 23,000) |
| 2012-2013 | 34,000,000 | (32,000,000 – 38,000,000) | 16,000,000 | (15,000,000 – 18,000,000) | 570,000 | (530,000 – 680,000) | 43,000 | (37,000 – 57,000) |
| 2013-2014 | 30,000,000 | (28,000,000 – 33,000,000) | 13,000,000 | (12,000,000 – 15,000,000) | 350,000 | (320,000 – 390,000) | 38,000 | (33,000 – 50,000) |
| 2014-2015 | 30,000,000 | (29,000,000 – 33,000,000) | 14,000,000 | (13,000,000 – 16,000,000) | 590,000 | (540,000 – 680,000) | 51,000 | (44,000 – 64,000) |
| 2015-2016 | 24,000,000 | (20,000,000 – 33,000,000) | 11,000,000 | (9,000,000 – 15,000,000) | 280,000 | (220,000 – 480,000) | 23,000 | (17,000 – 35,000) |
| 2016-2017 | 29,000,000 | (25,000,000 – 45,000,000) | 14,000,000 | (11,000,000 – 23,000,000) | 500,000 | (380,000 – 860,000) | 38,000 | (29,000 – 61,000) |
| 2017-2018 | 41,000,000 | (35,500,000 – 53,000,000) | 21,000,000 | (18,000,000 – 27,000,000) | 710,000 | (560,000 – 1,100,000) | 52,000 | (3,000† – 95,500) |
| 2018-2019 | 29,000,000 | (25,000,000 – 40,000,000) | 17,000,000 | (11,500,000 – 18,500,000) | 380,000 | (300,000 – 66,000) | 28,000 | (19,000 – 97,000) |
| 2019-2020 | 36,000,000 | (29,000,000 – 71,000,000) | 16,000,000 | (13,000,000 – 32,000,000) | 390,000 | (313,000 – 750,000) | 25,000 | (18,000 – 79,000) |
| 10 yr avg: | 34,700 | |||||||
| 2021-2022* | 9,000,000 | (7,700,000 – 15,000,000) | 4,000,000 | (3,600,000 – ,300,000) | 100,000 | (82,000 – 176,000) | 5,000 | (3,700 – 20,000) |
| Averages: | 26,572,727 | 12,754,545 | 390,909 | 32,000 | ||||
| ** Estimates are not available for the 2020-2021 flu season due to minimal influenza activity. | ||||||||
| Preliminary estimates* | ||||||||
| † I think the "3,000" lower bound which the CDC shows for the number of deaths from flu in the 2017-2018 season is a typographical error. The correct figure is probably about 35,000. I've emailed the CDC about it, repeatedly, but they've not responded. -DAB | ||||||||
| Source: | https://www.cdc.gov/flu/about/burden/index.html | |||||||
| Excel spreadsheet: | https://sealevel.info/CDC_Influenza_stats_Table1_2010-11_thru_2021-22_as_of_2023-08-14.xlsx | |||||||
| Exported to web page: | https://sealevel.info/CDC_Influenza_stats_Table1_2010-11_thru_2021-22_as_of_2023-08-14.htm | |||||||