CDC: West Nile Virus - Statistics, Surveillance, and Control > Any Activity by State Maps 2011

CDC: West Nile Virus - Statistics, Surveillance, and Control > Any Activity by State Maps 2011

Statistics, Surveillance, and Control

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West Nile virus (WNV) activity reported to ArboNET, by state, United States, 2011

This map reflects surveillance findings occurring between January 1, 2011 through December 31, 2011 as reported to CDC's ArboNET system for public distribution by state and local health departments.

Map shows the distribution of non human activity (shaded in light green) and human infections including PVDs (dark green) occurring during 2011 by state. If West Nile virus infection is reported from any area of a state, that entire state is shaded.

Data table:
Non-human WNV infections have been reported to CDC ArboNET from the following states: Arizona, California, Colorado, Connecticut, DC, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming.

Human infections including PVDs have been reported to CDC ArboNET from the following states: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, DC, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, and Wyoming.

Footnote: The Map displays white areas that represent No WNV activity reported, light green areas that represent Non-human activity only*, and dark green areas that represent disease cases or presumptive viremic donors†.

* Includes WNV veterinary disease cases and WNV infections in mosquitoes, birds, and sentinel animals.
† WNV activity in non-human species also might have been reported.

USGS: CDC Arbonet Maps provided by USGS

For information on WNV activity in Canada please see:http://www.phac-aspc.gc.ca/wnv-vwn/index.html

WNV Surveillance Maps Detailing Human and Animal Activity Additional Years:

For archived surveillance pages please visit the West Nile virus surveillance archives