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Use of syndromic ILI surveillance as a proxy for influenza sentinel surveillance

Salt Lake Valley Health Department (SLVHD) uses syndromic surveillance to monitor influenza-like illness (ILI) activity as part of a comprehensive influenza surveillance program.  During the 2009 spring and fall waves of novel H1N1 influenza, sentinel surveillance became increasingly burdensome for both community clinics and SLVHD.  Given that syndromic surveillance is more efficient and less error-prone, SLVHD evaluated its syndromic surveillance system to determin if  it could be an effective proxy for influenza sentinel surveillance.

The results, shown in a poster that can be accessed here, were overwhelmingly positive, showing a strong correlation between syndromic ILI and sentinel provider ILI cases.