United States influenza statistics by flu season

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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 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]



Hospitalizations and deaths[edit]

*2017–2018, 2018–2019, and 2019–2020 are preliminary estimates.

Estimated Influenza Disease Burden – United States – by thousands[1]
Season Hospitalizations Deaths
Estimate 95% UI Estimate 95% UI
2010–11 290 270–350 37 32–51
2011–12 140 130–190 12 11–23
2012–13 570 530–680 43 37–57
2013–14 350 320–390 38 33–50
2014–15 590 540–680 51 44–64
2015–16 280 220–480 23 17–35
2016–17 500 380–860 38 29–61
2017–18* 810 620–1,400 61 46–95
2018–19* 490 390–770 34 26–53
2019–20* 400 350–500 22 18–29

Symptomatic illnesses and medical visits[edit]

*2017–2018, 2018–2019, and 2019–2020 are preliminary estimates.

Note: The numbers below have been rounded off to millions.

Estimated Influenza Disease Burden – United States[1]
Season Symptomatic Illnesses Medical Visits
Estimate 95% UI Estimate 95% UI
2010–11 21,000,000 20,000,000–25,000,000 10,000,000 9,000,000–12,000,000
2011–12 9,000,000 9,000,000–12,000,000 4,000,000 4,000,000–6,000,000
2012–13 34,000,000 32,000,000–38,000,000 16,000,000 15,000,000–18,000,000
2013–14 30,000,000 28,000,000–33,000,000 13,000,000 12,000,000–15,000,000
2014–15 30,000,000 29,000,000–33,000,000 14,000,000 13,000,000–16,000,000
2015–16 24,000,000 20,000,000–33,000,000 11,000,000 9,000,000–15,000,000
2016–17 29,000,000 25,000,000–45,000,000 14,000,000 11,000,000–23,000,000
2017–18* 45,000,000 39,000,000–58,000,000 21,000,000 18,000,000–27,000,000
2018–19* 36,000,000 31,000,000–45,000,000 17,000,000 14,000,000–21,000,000
2019–20* 38,000,000 34,000,000–47,000,000 18,000,000 15,000,000–22,000,000

See also[edit]

References[edit]

  1. ^ a b c "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.
  2. ^ "What you need to know about influenza (flu) from CDC". Centers for Disease Control and Prevention, (NCIRD)..

External links[edit]

Classification
External resources
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