The "Disease" page contains editorial summaries of the disease from a clinical viewpoint: pictures of lesions, information on susceptibility, disease characteristics & diagnosis including clinical signs, pathological findings etc, treatment & control, including vaccination. Linked from these summaries are pages giving detailed reports from the literature, closely referenced. The "Virus" page contains similar editorial summaries of the characteristics of the virus, including the structure and identification of the virus, the host species associated with the virus, its life cycle and transmission; physical and chemical factors which affect the virus and its biogeographical - climatic range. Once again these summaries are linked to detailed and closely referenced literature reports. The "Mosquitoes"  section leads the user to information on the individual species of mosquito which have been recorded as intermediate hosts/vectors for this virus, while the "Mosquito Habitats" section provides information on the different habitat types in which mosquito species breed.

The "Directory of Organisations" provides information on West Nile Virus in the USA. This section of the module is designed to provide easy access for the user to the multitude of organisations which provide information on West Nile Virus in the USA and its control. For each organisation, in addition to full contact details, an outline is given of the type of work in which the organisation is involved.

The central "Managing for West Nile Virus" flowchart leads the user to the different aspects of surveillance and control. Separate pages cover Mosquito Surveillance, Bird Surveillance, Equine Surveillance and Human Surveillance, as well as Habitat Management, Biological Control, Chemical Control, Personal Protection and Vaccination which may be applied. These pages refer extensively to major federal and state Guidelines for management of West Nile Virus in particular and Arboviruses in general in the USA.

As with all WILDPro modules, all information is closely referenced and is linked to relevant documents provided within the WILDPro Electronic Library.

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Acknowledgements Editor: Robert G McLean, National Wildlife Health Center (NWHC) Associate Editors: Debra C Bourne (WIN), F Joshua Dein (NWHC), Becki Lawson (WIN) and Suzanne I Boardman (WIN) The purpose of this module is: to provide information on the investigation, epidemiology and control of West Nile Virus, and to develop a framework and data outline for developing new technology for WILDPro which will enable multi-authoring and linkages to other databases. We particularly wish to thank John H Keel (DoIT), Tosia M Priebe (NWHC) and Dr Tracey S McNamara (WCS) for their hard work, professionalism, encouragement and guidance.   This "Managing for West Nile Virus Infection in the USA" WILDPro module has been  funded by the United States Geological Survey's Center for Integration of Natural Disaster Information and the Wildlife Information Network