NO ACTIVITY - Overall clinical activity remains low and there are no lab confirmed cases. SPORADIC - Isolated cases of lab confirmed influenza in the state; ILI activity not increased. OR A lab confirmed outbreak is reported in one single institution in the state; ILI activity not increased.LOCAL - Increased ILI activity within a single region AND recent lab evidence of influenza in that region. ILI activity in other regions not increased. OR Two or more institutional outbreaks reported within a single region AND recent lab confirmed influenza in the same region. Other regions do not have increased ILI and virus activity is no greater than sporadic in those regions.REGIONAL - Increased ILI in at least 2 regions AND recent evidence of lab confirmed influenza in the affected regions. OR Institutional outbreaks of respiratory disease reported in at least 2 regions AND recent evidence of lab confirmed influenza in the affected regions.WIDESPREAD - Increased ILI and/or institutional outbreaks of respiratory disease reported in at least half of the regions AND recent evidence of lab confirmed influenza in the affected regions. Click here to read about our flu surveillance regions. |
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FLU SURVEILLANCE >
Activity Level Description
Subpages (1):
Maryland Flu Surveillance Regions
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