Vesicular Stomatitis Virus Spreads in Three States

Arizona and New Mexico each have three new VSV-positive equine premises and Texas has three positive cattle premises.
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VSV county map 5-7-2020

Counties in Arizona, New Mexico and Texas all have new cases of vesicular stomatitis virus (VSV) as of May 7, 2020.

The Animal and Plant Health Inspection Service, Veterinary Services, reported on May 7 the latest on the vesicular stomatitis virus (VSV) 2020 outbreak.

The reported noted that there have been no new VSV-infected states identified since April 23, 2020.

Currently affected states include Arizona, New Mexico and Texas.

Since the last situation report on April 29, there have been nine new VSV-affected premises identified (nine confirmed positive, 0 suspect) in 3 states:

Arizona (3 new confirmed positive premises)

  • Cochise County – 1 new confirmed positive equine premises
  • Gila County (new infected county) – 1 confirmed positive equine premises
  • Pima County (new infected county) – 1 confirmed positive equine premises

New Mexico (3 new confirmed positive premises)

  • Bernalillo County (new infected county) – 1 confirmed positive equine premises
  • De Baca County (new infected county) – 1 confirmed positive equine premises
  • Grant County (new infected county) – 1 confirmed positive equine premises

Texas (3 new confirmed positive premises)

  • Starr County – 2 new confirmed positive cattle premises
  • Zapata County (new infected county) – 1 confirmed positive cattle premises

Summary of the Outbreak

The 2020 VSV outbreak began on April 13, 2020, when the National Veterinary Services Laboratories (NVSL) in Ames, Iowa confirmed the first VSV-positive premises in Dona Ana County, New Mexico.

Arizona and Texas subsequently broke with VSV cases which were confirmed by NVSL on April 22, 2020 (Cochise County, Arizona) and April 23, 2020 (Starr County, Texas).

Since the start of the outbreak, 23 VSV-affected premises have been identified (21 confirmed positive, 2 suspect). Twenty (20) of these premises have only equine species clinically affected and 3 premises have clinically affected cattle (Starr and Zapata Counties, Texas).

Arizona has identified 5 affected premises (5 confirmed positive, 0 suspect) in 4 counties (Cochise, Gila, Pima, and Pinal Counties).

New Mexico has identified 12 affected premises (10 confirmed positive, 2 suspect) in 6 counties (Bernalillo, De Baca, Dona Ana, Eddy, Grant and Sierra Counties).

Texas has identified 6 affected premises (6 confirmed positive, 0 suspect) in 3 counties (El Paso, Starr, and Zapata Counties).

For more information visit the USDA APHIS Veterinary Services update report.

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