Seasonal Flu

  • Flu outbreaks follow predictable seasonal patterns in the United States; it occurs annually, usually
    in winter.

  • Healthy adults are usually not at
    risk for serious complications. Children, the elderly and those with certain health problems are at higher risk for serious complications.

  • Health care providers and hospitals can meet public and patient healthcare needs.

  • Vaccine is developed based on known flu strains and is available for the annual flu season.

  • Often effective antivirals are available.

  • Average U.S. deaths are approximately 36,000/year.

  • Symptoms: fever, cough, runny nose, muscle ache and fatigue. Deaths can occur due to complications, such as pneumonia.

  • Generally causes modest impact on society (those sick should stay home from work or school).

  • Manageable impact on domestic and world economy.

How Does Seasonal Flu Differ from Pandemic Flu?



Pandemic Flu

  • Occurs rarely (three times in 20th century - 1918, 1957, 1968).

  • People have no immunity due to no previous exposure.

  • Healthy people may be at increased risk for serious complications.

  • Health care providers and hospitals may be overwhelmed

  • Vaccine would not be available in the early stages of a pandemic

  • Effective antivirals will probably be in limited supply "

  • The number of deaths could be quite high (e.g. U.S. 1918 death toll was approximately 675,000)

  • Symptoms may be more severe and complications more frequent

  • May cause major impact on society (e.g. widespread restrictions on travel, closings of schools and businesses, cancellation of large public gatherings)

  • Potential for severe impact on domestic and world economy




















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