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WEBSITE OF THE STATE OF SOUTH DAKOTA DEPARTMENT OF HEALTH
Kim Malsam-Rysdon, Secretary of Health

2014-2015 Seasonal Influenza Surveillance

Surveillance reports are posted weekly during the flu season.

  • Week 18 Summary (ending May 9)
    Note: This is last weekly summary for the 2014-2015 flu season.

Summaries of previous flu seasons in South Dakota

South Dakota reports influenza activity to the Centers for Disease Control and Prevention using the following CDC definitions.

 

Influenza-like illness (ILI) Fever >=100° F and cough or sore throat

No Activity Overall clinical activity remains low and there are no lab confirmed cases

Sporadic Activity Isolated cases of lab confirmed influenza in the state; Influenza-Like-Illness (ILI) activity is not increased.

Local Activity Increased ILI within a single region** AND recent (within the past 3 weeks) laboratory evidence of influenza in that region. ILI activity in other regions is not increased.

Regional Activity Increased ILI in ≥2 but less than half of the regions AND recent (within the past 3 weeks) lab confirmed influenza in the affected regions.

Widespread Activity Increased ILI and/or institutional outbreaks (ILI or lab confirmed) in at least half of the regions AND recent (within the past 3 weeks) lab confirmed influenza in the state.
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