Equine Infectious Anemia Disease Information |
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Web Mapping
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Welcome to the Equine Infectious Anemia Testing interactive mapping site. Click here to open the mapping interface. |
Source and Collection Methods
Data has been collected nationally from 1972 to the present, creating a wealth of information about EIA testing in the United States over the past three decades.
States test horses under certain circumstances, for example, moving a horse across a state boundary. State, university and private labs, all NVSL-approved, are required to report the reactors (positive test results) within 24 hours to the State Veterinarian. Negative test results are also reported. Data for all states are collected at the national level by USDA in the autumn of each year, for the fiscal year September 1 through August 31. Fields reported include the number of horses tested and the number of horses with positive test results (i.e., reactors). From these data, a reactor rate is calculated using the formula: the Number of Reactors divided by the Number of Tests, then multiplied by 10,000.
Note that some horses are tested more than once in a year, based on their movements and their contact with other animals. Regulations require equines be tested for EIA when they are moved for one of several reasons: (1) being entered into exhibitions or competitive events, (2) being moved interstate, (3) changing ownership, (4) being imported, or (5) entering horse auctions or sales markets.
The Future: Now web mapping is available. It allows the user to use a web browser to interact with the data, creating a customized map view, and then printing the map or saving it as a graphic for use in another application. Web mapping is accessible HERE.
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