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Summary of the 2014-2015 influenza season

Supporting Files Public Domain
File Language:
English


Details

  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.)
  • Description:
    Compared with the previous five influenza seasons, the 2014-2015 season was moderately severe, with overall high levels of outpatient illness, high levels of hospitalization and a relatively high percentage of deaths attributed to pneumonia and influenza. The season was a severe one for people 65 years and older. The season was a relatively early in terms of timing, with influenza activity increasing through November and December, and peaking in late December.

    The frequency of outpatient visits to doctors for influenza like illness (ILI) went above the national baseline the week ending November 22, 2014 and remained elevated for 20 consecutive weeks, making the season longer than average and the longest in more than a decade. Over the previous 13 seasons, ILI was at or above baseline for 13 weeks on average, with a range of one week to 19 weeks. See 2014-2015 Flu Season Drawing to a Close for more information.

  • Content Notes:
    What was the 2014-2015 flu season like? -- When did the 2014-2015 flu season peak? -- How is influenza disease severity characterized? -- How many people died from flu during the 2014-2015 season? -- Why is it difficult to know how many people die from flu? -- What flu viruses circulated during the 2014-2015 season? -- Who was most severely impacted during the 2014-2015 season? -- How many children died from the flu during the 2014-2015 season? -- Were infections with novel (non-human) influenza viruses detected during 2014-2015? -- What kind of vaccines were available in the United States during the 2014-2015 season? -- Were there new recommendations for the 2014-2015 influenza season? -- How much flu vaccine was produced and distributed during the 2014-2015 season? -- What flu viruses did the 2014-2015 flu vaccines protect against? -- How effective was the 2014-2015 flu vaccine? -- Was this season's vaccine a good match for circulating viruses? -- Why didn’t the 2014-2015 season vaccine contain the right H3N2 virus? -- What did CDC do to monitor vaccine effectiveness during the 2014-2015 season? -- What did CDC do to monitor antiviral resistance in the United States during the 2014-2015 season? -- Publications.
  • Subjects:
  • Document Type:
    Webpage
  • Place as Subject:
    United States
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:5398907c1ab356e86c83eb5ac573bd5c27e10ac6d41b87ed84c4c3bb20ef6e8c
  • Download URL:
  • File Type:
    Filetype[PDF - 132.26 KB ]

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