United States influenza statistics by flu season

Last updated

The different sites of infection (shown in red) of seasonal H1N1 versus avian H5N1. This influences their lethality and ability to spread. H1N1 versus H5N1 pathology.png
The different sites of infection (shown in red) of seasonal H1N1 versus avian H5N1. This influences their lethality and ability to spread.

US influenza statistics by flu season. From the Centers for Disease Control and Prevention page called "Disease Burden of Flu": "Each year CDC estimates the burden of influenza in the U.S. CDC uses modeling to estimate the number of flu illnesses, medical visits, hospitalizations, and deaths related to flu that occurred in a given season. The methods used to calculate these estimates are described on CDC’s webpage, How CDC Estimates the Burden of Seasonal Flu in the U.S." [1] [2] [3]

Contents

The tables below include the latest available years the CDC has provided on their website. [1]

Hospitalizations and deaths

* 2019 to 2020 season is a preliminary estimate.

Estimated Influenza Disease Burden – United States [1]
SeasonHospitalizationsDeaths
Estimate95% UIEstimate95% UI
2010–2011290,000(270,000 – 350,000)37,000(32,000 – 51,000)
2011–2012140,000(130,000 – 190,000)12,000(11,000 – 23,000)
2012–2013570,000(530,000 – 680,000)43,000(37,000 – 57,000)
2013–2014350,000(320,000 – 390,000)38,000(33,000 – 50,000)
2014–2015590,000(540,000 – 680,000)51,000(44,000 – 64,000)
2015–2016280,000(220,000 – 480,000)23,000(17,000 – 35,000)
2016–2017500,000(380,000 – 860,000)38,000(29,000 – 61,000)
2017–2018710,000(560,000 – 1,100,000)52,000(37,000 – 95,500)
2018–2019380,000(300,000 – 660,000)28,000(19,000 – 97,000)
2019–2020380,000(312,000 – 630,000)20,000(18,000 – 80,000)
2022-2023360,000(299,000 – 678,000)21,000(19,000 – 58,000)
2024-2025770,000(700,000 – 800,000)38,000(20,000 - 40,000)

Symptomatic illnesses and medical visits

* 2019 to 2020 season is a preliminary estimate.

Estimated Influenza Disease Burden – United States [1]
SeasonSymptomatic IllnessesMedical Visits
Estimate95% UIEstimate95% UI
2010–201121,000,000(20,000,000 – 25,000,000)10,000,000(9,300,000 – 12,000,000)
2011–20129,300,000(8,700,000 – 12,000,000)4,300,000(4,000,000 – 5,600,000)
2012–201334,000,000(32,000,000 – 38,000,000)16,000,000(15,000,000 – 18,000,000)
2013–201430,000,000(28,000,000 – 33,000,000)13,000,000(12,000,000 – 15,000,000)
2014–201530,000,000(29,000,000 – 33,000,000)14,000,000(13,000,000 – 16,000,000)
2015–201624,000,000(20,000,000 – 33,000,000)11,000,000(9,000,000 – 15,000,000)
2016–201729,000,000(25,000,000 – 45,000,000)14,000,000(11,000,000 – 23,000,000)
2017–201841,000,000(35,500,000 – 53,000,000)21,000,000(18,000,000 – 27,000,000)
2018–201929,000,000(25,000,000 – 40,000,000)17,000,000(11,500,000 – 18,500,000)
2019–202035,000,000(30,000,000 – 49,000,000)16,000,000(14,000,000 – 22,000,000)
2022-202335,000,000(30,000,000 – 49,000,000)14,000,000(12,000,000 – 24,000,000)
2024-202556,000,000(47,000,000 – 82,000,000)21,000,000(16,000,000 – 30,000,000)

See also

References

  1. 1 2 3 4 "Disease Burden of Flu". Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD). 4 October 2022. Scroll down for table and illustration.
  2. ↑ "Influenza (flu)". Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD). 30 June 2023.
  3. ↑ "How CDC Estimates the Burden of Seasonal Influenza in the U.S." Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD). 19 May 2023.
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