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St Louis Encephalitis
Human
2009
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St Louis Encephalitis:  Norfolk - Human
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Essex County Middlesex County Suffolk County Norfolk County Norfolk County Suffolk County Plymouth County Plymouth County Norfolk County
Map Scalebar 9.5 km
Cumulative 2009 Data as of 3 am, Nov 24, 2009*
These data are provisional and may be revised or adjusted in the future.
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* States and counties in yellow are those in which virus activity has been reported historically, but no positive test results have been reported or no surveillance has occurred this year.