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: preliminary estimates.

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

Estimated Influenza Disease Burden – United States[1]
Season Hospitalizations Deaths
Estimate 95% UI Estimate 95% UI
2010–11 290,000 270,000–352,000 37,000 32,000–51,000
2011–12 140,000 131,000–187,000 12,000 11,000–23,000
2012–13 571,000 524,000–674,000 43,000 36,000–58,000
2013–14 347,000 325,000–385,000 38,000 33,000–50,000
2014–15 591,000 536,000–675,000 51,000 44,000–64,000
2015–16 276,000 215,000–483,000 23,000 17,000–35,000
2016–17 497,000 383,000–857,000 38,000 28,500–61,000
2017–18* 808,000 621,000–1,357,000 61,000 46,000–95,000
2018–19 491,000 387,000–766,000 34,000 26,000–53,000
2019–20 405,000 353,000–504,000 22,000 18,000–29,000

Symptomatic illnesses and medical visits[edit]

*2017–2018: preliminary estimates.

Note: The numbers below have been rounded off to hundreds of thousands.

Estimated Influenza Disease Burden – United States[1]
Season Symptomatic Illnesses Medical Visits
Estimate 95% UI Estimate 95% UI
2010–11 21,300,000 19,900,000–24,900,000 10,000,000 9,300,000–11,800,000
2011–12 9,300,000 8,700,000–12,000,000 4,300,000 4,000,000–5,600,000
2012–13 33,700,000 31,700,000–38,000,000 15,800,000 14,700,000–18,000,000
2013–14 29,700,000 27,900,000–32,700,000 13,200,000 12,100,000–14,800,000
2014–15 30,200,000 28,600,000–32,700,000 14,400,000 13,300,000–15,900,000
2015–16 23,500,000 19,900,000–32,500,000 10,600,000 8,900,000–14,700,000
2016–17 29,200,000 24,700,000–44,900,000 13,600,000 11,400,000–22,500,000
2017–18* 44,800,000 39,300,000–57,900,000 20,700,000 18,000,000–27,200,000
2018–19 35,500,000 31,300,000–45,000,000 16,500,000 14,300,000–21,200,000
2019–20 38,200,000 33,700,000–47,000,000 17,500,000 15,400,000–21,900,000

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). October 6, 2020. Retrieved April 9, 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