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West Nile Virus Surveillance 2000 - Veterinary Cases
What this map layer shows: Where confirmed cases of West Nile Virus occurred in 27 species of mammals in the year 2000, by county.
Background Information
Sample Map West Nile virus (WNV) is a mosquito-borne disease that can cause encephalitis (inflammation of the brain) in humans. It was first reported in the United States in the fall of 1999 and presents a threat to humans, horses, birds, and other vertebrates. The Centers for Disease Control and Prevention (CDC), Division of Vector-Borne Infectious Diseases collects information on the occurrence of WNV and works to develop improved methods for disease diagnosis, surveillance, prevention, and control. For 2000, WNV surveillance activities included monitoring human, veterinary, wild bird, sentinel chicken flock, and mosquito cases. Veterinary surveillance documented cases that were reported voluntarily by veterinarians who observed symptoms of WNV infection in any animals other than wild birds (such as pets, livestock, and wildlife) and requested laboratory testing. The CDC worked with the U.S. Geological Survey, U.S. Department of Agriculture Animal and Plant Health Inspection Service, State wildlife agencies, and State and local health and vector-control agencies to track the occurrence of WNV and to provide national and regional surveillance information to public health officials, elected government officials, and the public. The CDC provided the data for this map layer. The West Nile Virus Surveillance 2000 - Veterinary Cases database shows the location of WNV cases found in 58 horses and 26 other mammals, including bats, rodents, rabbits, cats, raccoons, and one skunk, in the 2000 surveillance area. The surveillance area encompassed 20 States and the District of Columbia. Information is presented by county and includes the total number of confirmed WNV cases, for each week and for the entire year, as well as the number of samples submitted for testing, for each week and for the entire year. Additional information on West Nile virus is available from the CDC West Nile virus basics page. Related Links: If you download the raw data of 2000 WNV Veterinary Cases you may also want to download the 2000 County Boundaries raw data. These two map layers can be used together to create a map of WNV occurrences. Download 2000 County Boundaries
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Invasive Species - West Nile Virus Veterinary Cases - 2000

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West Nile Virus 2000

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West Nile Virus Surveillance, 2000 - Veterinary Cases


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