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This 1976 photograph depicted a Colorado roadside drainage ditch, which was draining irrigation tailwater, and was a known habitat and breeding site for Culex tarsalis mosquitoes. The epidemiologic importance of C. tarsalis lies in its ability to spread Western equine encephalitis (WEE), St. Louis encephalitis (SLE), and California encephalitis, and was at one point, the main vector of West Nile virus (WNV) in the western United States.
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Content Providers(s):CDC
Creation Date:1976
Photo Credit:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.