VSV Continues Spread in Four States

Since the last situation report on August 29, there have been 42 new VSV-affected premises identified.

Current VSV-positive counties are shaded in dark blue. USDA APHIS

Vesicular stomatitis virus (VSV)-positive premises have been confirmed to date in 7 states: Colorado, Nebraska, New Mexico, Oklahoma, Texas, Utah and Wyoming. No new states have been confirmed positive since the last situation report. New Mexico and Utah had no new premises reporting positive VSV cases since the last report on August 29.

Since the last situation report, there have been 42 new VSV-affected premises (11 confirmed positive premises, 31 suspect) identified:

Colorado (3 new confirmed positive premises, 20 new suspect premises)

  • Adams County – 1 new suspect premises
  • Delta County – 3 new suspect premises
  • Dolores County (new infected county) – 1 confirmed positive premises
  • Douglas County – 1 new suspect premises
  • Jefferson County – 1 new confirmed positive, 5 new suspect premises
  • La Plata County – 1 new suspect premises
  • Mesa County – 2 new suspect premises
  • Montezuma County – 1 new suspect premises
  • Morgan County – 2 new suspect premises
  • Pueblo County – 1 new suspect premises
  • San Miguel County – 1 new suspect premises
  • Weld County – 1 new confirmed positive, 2 new suspect premises

Since the last situation report, 98 previously VSV-infected or suspect premiseshave been released from quarantine.

Nebraska (1 new confirmed positive premises)

  • Morrill County (New Infected County) – 1 confirmed positive premises

Since the last situation report, 3 previously VSV-infected premises were releasedfrom quarantine.

New Mexico

Since the last situation report, 2 previously VSV-infected or suspect premises were released from quarantine.

Texas (1 new confirmed positive premises, 1 new suspect premises)

  • Hays County – 1 new suspect premises
  • Hill County (new infected county) – 1 confirmed positive premises

Since the last situation report, 18 previously VSV-infected or suspect premiseshave been released from quarantine.

Utah

Since the last situation report, 6 previously VSV-infected or suspect premises have been released from quarantine.

Wyoming (6 new confirmed positive premises, 10 new suspect premises)

  • Albany County – 2 new confirmed positive premises
  • Big Horn County (new infected county) – 1 confirmed positive premises
  • Carbon County – 1 new confirmed positive premises
  • Goshen County – 1 new suspect premises
  • Hot Springs County – 1 new confirmed positive, 1 new suspect premises
  • Park County (new infected county) – 1 new confirmed positive, 6 newsuspect premises
  • Platte County -2 new suspect premises

Since the last situation report, 6 previously VSV-infected or suspect premiseswere released from quarantine.

Summary of the Outbreak

The 2019 VSV outbreak began on June 21, 2019, when the National Veterinary Services Laboratories (NVSL) in Ames, Iowa confirmed the first VSV-positive premises in Kinney County, Texas. New Mexico, Colorado, Wyoming, Oklahoma, Nebraska and Utah subsequently broke with cases which were confirmed by NVSL on June 26, 2019 (Sandoval County, New Mexico), July 3, 2019 (Weld County, Colorado), July 24, 2019 (Platte County, Wyoming), July 29, 2019 (Tillman County, Oklahoma), August 9, 2019 (Lincoln County, Nebraska), and August 19, 2019 (Emery and Uintah Counties, Utah).

Since the start of the outbreak, 947 VSV-affected premises have been identified (396confirmed positive, 551 suspect). Nine hundred forty-four (944) of these premises have only equine species clinically affected and 3 premises have affected cattle (Boulder and Delta County, Colorado and Gonzales County, Texas). 

Colorado has identified 632 affected premises (236 confirmed positive, 396 suspect) in 32 counties (Adams, Alamosa, Arapahoe, Archuleta, Boulder, Broomfield, Chaffee, Conejos, Delta, Dolores, Douglas, El Paso, Fremont, Garfield, Gilpin, Grand, Gunnison, Jefferson, La Plata, Larimer, Mesa, Mineral, Montezuma, Montrose, Morgan, Ouray, Park, Pueblo, Rio Blanco, San Miguel, Summit, and Weld Counties). 

Nebraska has identified 8 affected premises in 4 counties (Dawes, Lincoln,Morrill, and Scotts Bluff Counties). 

New Mexico has identified 76 affected premises (47 confirmed positive, 29 suspect) in 12 counties (Cibola, Los Alamos, Mora, Rio Arriba, Sandoval, San Juan, San Miguel, Santa Fe, Sierra, Socorro, Taos, and Valencia Counties). 

Oklahoma has identified 1 affected premises in 1 county (Tillman County). 

Texas has identified 170 affected premises (75 confirmed positive, 95 suspect) located in 37 counties (Bastrop, Bell, Bosque, Brown, Caldwell, Coleman, Collin, Coryell, Dallas, Eastland, Ellis, Erath, Falls, Gonzales, Guadalupe, Haskell, Hays, Hill, Hood, Johnson, Kerr, Kinney, Lampasas, Mason, McLennan, Mills, Palo Pinto, Parker, San Saba, Shackelford, Somervell, Taylor, Tom Green, Travis, Val Verde, Wichita, and Williamson Counties). 

Utah has identified 14 affected premises (10 confirmed positive, 4 suspect) in 5 counties (Duchesne, Emery, Grand, San Juan, and Uintah Counties). 

Wyoming has identified 46 affected premises (19 confirmed positive, 27 suspect) in 10 counties (Albany, Big Horn, Carbon, Converse, Goshen, Hot Springs, Laramie, Park, Platte, and Sweetwater Counties). 

There have been a total of 770 previously VSV-infected or suspect premises that have completed the quarantine period and been released.

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