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The anticipated spread of West Nile Virus into Arizona surfaced the summer of 2003. Notices from the Center of Disease Control, Arizona Department of Public Health, Maricopa County Environmental Service Vector Control, local news stations, and articles from the local papers, have followed the introduction and spread of this disease.
Information on this site is posted to keep the public informed, educated, and aware of the arboviral disease's potential health hazards and in no way is meant as a definitive source from which to base conclusions.
Visitors to the Tres Rios Hayfield and Cobble sites are strongly encouraged to heed the precautions promugulated by the Center for Disease Control (CDC), Morbidity and Mortality Weekly Report (MMWR), Arizona Department of Health Services, and Maricopa County Environmental Service Vector Control.
In mid-June, 2007, a mosquito sample collected by Maricopa County Vector Control Officers near the entrance to the Hayfield site tested positive for West Nile Virus (WNV). Although the constant surveillance still has not detected West Nile Virus within the wetlands project, caution should be taken to minimize mosquito bites. The West Nile Virus has been identified throughout the Phoenix metropolitan area since it first migrated here about five years ago. The staff surveys mosquito populations weekly and controls mosquito production with integrated pest management techniques..
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