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Volume 13, Number 11—November 2007

Dispatch

Environmental Predictors of Human West Nile Virus Infections, Colorado

Jennifer L. Patnaik*Comments to Author , Lara Juliusson*, and Richard L. Vogt*
Author affiliations: *Tri-County Health Department, Greenwood Village, Colorado, USA;

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Table 2

Proportion of human infections following positive and negative environmental specimens, Tri-County Health Department, Colorado, 2003

Specimens No. human infections/
environmental-positive results (%) No. human infections/
environmental-negative results (%)
All specimens 133/262 (50.8) 591/687 (86.0)
Birds 62/105 (59.0) 82/98 (83.7)
Mosquito pools 38/57 (66.7) 154/203 (75.9)
Equines 17/55 (30.9) 30/32 (93.8)
Sentinel chickens 16/45 (35.6) 325/354 (91.8)

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