United States influenza statistics by flu season
US influenza statistics by flu season. From the Centers for Disease Control and Prevention page called "Disease Burden of Influenza": "Each year CDC estimates the burden of influenza in the U.S. CDC uses modeling to estimate the number of influenza illnesses, medical visits, flu-associated hospitalizations, and flu-associated deaths that occur in the U.S. in a given season. The methods used to calculate these estimates are described on CDC’s webpage, How CDC Estimates the Burden of Seasonal Influenza in the U.S."[1][2]
The different sites of infection (shown in red) of seasonal H1N1 versus avian H5N1. This influences their lethality and ability to spread.
Hospitalizations and deaths
- UI = uncertainty interval.
*2017–2018, 2018–2019, and 2019–2020 are preliminary estimates.
| Season | Hospitalizations | Deaths | ||
|---|---|---|---|---|
| Estimate | 95% UI | Estimate | 95% UI | |
| 2010 – 2011 | 290,000 | (270,000 – 350,000) | 37,000 | (32,000 – 51,000) |
| 2011 – 2012 | 140,000 | (130,000 – 190,000) | 12,000 | (11,000 – 23,000) |
| 2012 – 2013 | 570,000 | (530,000 – 680,000) | 43,000 | (37,000 – 57,000) |
| 2013 – 2014 | 350,000 | (320,000 – 390,000) | 38,000 | (33,000 – 50,000) |
| 2014 – 2015 | 590,000 | (540,000 – 680,000) | 51,000 | (44,000 – 64,000) |
| 2015 – 2016 | 280,000 | (220,000 – 480,000) | 23,000 | (17,000 – 35,000) |
| 2016 – 2017 | 500,000 | (380,000 – 860,000) | 38,000 | (29,000 – 61,000) |
| 2017 – 2018* | 810,000 | (620,000 – 1,400,000) | 61,000 | (46,000 – 95,000) |
| 2018 – 2019* | 490,000 | (390,000 – 770,000) | 34,000 | (26,000 – 53,000) |
| 2019 – 2020* | 400,000 | (350,000 – 500,000) | 22,000 | (18,000 – 29,000) |
Symptomatic illnesses and medical visits
- UI = uncertainty interval.
*2017–2018, 2018–2019, and 2019–2020 are preliminary estimates.
| Season | Symptomatic Illnesses | Medical Visits | ||
|---|---|---|---|---|
| Estimate | 95% UI | Estimate | 95% UI | |
| 2010 – 2011 | 21,000,000 | (20,000,000 – 25,000,000) | 10,000,000 | (9,300,000 – 12,000,000) |
| 2011 – 2012 | 9,300,000 | (8,700,000 – 12,000,000) | 4,300,000 | (4,000,000 – 5,600,000) |
| 2012 – 2013 | 34,000,000 | (32,000,000 – 38,000,000) | 16,000,000 | (15,000,000 – 18,000,000) |
| 2013 – 2014 | 30,000,000 | (28,000,000 – 33,000,000) | 13,000,000 | (12,000,000 – 15,000,000) |
| 2014 – 2015 | 30,000,000 | (29,000,000 – 33,000,000) | 14,000,000 | (13,000,000 – 16,000,000) |
| 2015 – 2016 | 24,000,000 | (20,000,000 – 33,000,000) | 11,000,000 | (9,000,000 – 15,000,000) |
| 2016 – 2017 | 29,000,000 | (25,000,000 – 45,000,000) | 14,000,000 | (11,000,000 – 23,000,000) |
| 2017 – 2018* | 45,000,000 | (39,000,000 – 58,000,000) | 21,000,000 | (18,000,000 – 27,000,000) |
| 2018 – 2019* | 36,000,000 | (31,000,000 – 45,000,000) | 17,000,000 | (14,000,000 – 21,000,000) |
| 2019 – 2020* | 38,000,000 | (34,000,000 – 47,000,000) | 18,000,000 | (15,000,000 – 22,000,000) |
See also
- Influenza pandemic
- 2009 swine flu pandemic
- COVID-19 pandemic in the United States. Statistics section.
- Template:2019–20 coronavirus pandemic data. Flu statistics are often compared to coronavirus statistics.
- COVID-19 pandemic cases. More statistics for comparison purposes.
- COVID-19 pandemic deaths. More statistics for comparison purposes.
- Influenza vaccine
- Bird flu
- Human flu
- Swine flu
- Horse flu
- Dog flu
- Freshers' flu
- 2012–2013 flu season
- 2017–2018 United States flu season
- 2019–2020 United States flu season
References
- "Disease Burden of Influenza". Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD). 1 Oct 2020. Retrieved 9 Jan 2021.
- "What you need to know about influenza (flu) from CDC". Centers for Disease Control and Prevention, (NCIRD)..
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