APHIS/USDA Vesicular Stomatitis Update Includes Arizona

On January 6, 2015, the National Veterinary Services Laboratories in Ames, Iowa, confirmed a finding of vesicular stomatitis virus (VSV) infection (New Jersey serotype) on an equine premises in Santa Cruz County, Arizona. The following information is from APHIS/USDA.

Two (2) horses on the premises met the case definition of VSV infection with compatible clinical signs and positive complement fixation antibody titers. This is the 2014-2015 VSV index case for Arizona.

To date, a total of 434 VSV-positive premises (New Jersey serotype) have been confirmed in four U.S. states: Arizona (1 premises), Colorado (370 premises), Nebraska (1 premises), and Texas (62 premises).

There has been one county affected in Arizona (Santa Cruz); 17 counties affected in Colorado (Adams, Arapahoe, Boulder, Broomfield, Douglas, Elbert, El Paso, Fremont, Huerfano, Jefferson, Larimer, Logan, Morgan, Otero, Pueblo, Sedgwick, and Weld Counties); 1 county affected in Nebraska (Wheeler County); and 13 counties affected in Texas (Bastrop, Falls, Guadalupe, Hidalgo, Jim Wells, Kinney, Lee, McLennan, Nueces, San Patricio, Travis, Val Verde, and Williamson Counties).

Of the 434 total VSV-positive premises, 404 have been positive equine premises, 27 have been positive bovine premises, and three premises have had both cattle and horses positive.

Positive premises are eligible for quarantine release 21 days after lesions have healed in all affected animals.

To date, 359 premises in Colorado have been released from quarantine and there are an additional eight premises in Colorado on 21-day countdowns to quarantine release.

As of October 13, 2014, all confirmed VSV-positive premises in Texas were released from quarantine.

As of December 22, 2014, all confirmed VSV-positive premises in Nebraska were released from quarantine.

There are currently 12 confirmed VSV-positive premises under quarantine; 11 in Colorado and one in Arizona.

You can find additional information, including maps for current and cumulative positive premises, on this PDF.

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