Vesicular stomatitis virus (VSV) continues to spread across the country. VSV-affected states during the 2020 outbreak are Arizona, Kansas, Missouri, Nebraska, New Mexico, Oklahoma and Texas. New Mexico and Arizona have had all VSV-quarantined premises released, but the other states continue to have quarantines and/or new cases since the last situation report on July 20 by the USDA APHIS.
Since the last situation report, there have been 42 new VSV-affected premises identified (19 confirmed positive, 23 suspect) in 4 states.
Updates are as follows:
Kansas (7 new confirmed positive, 16 new suspect premises)
- Bourbon County (new infected county) – 1 confirmed positive equine premises
- Cherokee County – 1 new confirmed positive, 1 new suspect equine premises
- Coffey County – 2 new suspect equine premises
- Cowley County -1 new confirmed positive equine premises
- Greenwood County – 1 new suspect equine premises
- Linn County (new infected county) – 1 confirmed positive, 1 suspect equine premises
- Lyon County – 1 new confirmed positive, 1 new suspect equine premises
- Miami County – 2 new suspect equine premises
- Morris County – 1 new suspect equine premises
- Neosho County – 7 new suspect equine premises
- Wilson County – 1 new confirmed positive equine premises
- Woodson County (new infected county) – 1 confirmed positive equine premises
- The following previously VSV-infected or suspect premises have been released from quarantine: 3 in Butler County, 1 in Chase County, 3 in Cowley County, 1 in Miami County, 2 in Montgomery County, and 1 in Morris County.
Missouri (5 new confirmed positive, 7 new suspect premises)
- Cedar County (new infected county) – 1 confirmed positive equine/cattle premises
- Jasper County – 4 new confirmed positive, 4 new suspect equine premises
- Newton County – 3 new suspect equine premises Nebraska (1 new confirmed positive premises)
Nebraska (1 new confirmed positive premises)
- Gage County (new infected county) – 1 confirmed positive equine premises
- The following previously VSV-infected premises have been released from quarantine: 1 in Buffalo County.
Oklahoma (6 new confirmed positive premises)
- Adair County (new infected county) – 1 confirmed positive equine premises
- Nowata County (new infected county) – 1 confirmed positive equine premises
- Ottawa County – 2 new confirmed positive equine premises
- Tulsa County (new infected county) – 1 confirmed positive equine premises
- Washington County – 1 new confirmed positive equine 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, Texas, Kansas, Nebraska, Oklahoma, and Missouri subsequently broke with VSV cases which were confirmed by NVSL on April 22, 2020 (Cochise County, Arizona), April 23, 2020 (Starr County, Texas), June 16, 2020 (Butler County, Kansas), June 24, 2020 (Buffalo County, Nebraska), July 7, 2020 (Washington County, Oklahoma), and July 13, 2020 (Newton County, Missouri).
Since the start of the outbreak, 253 VSV-affected premises have been identified (163 confirmed positive, 90 suspect). Two hundred forty-three (243) of these premises had only equine species clinically affected, 9 premises had clinically affected cattle (McMullen, Starr, and Zapata Counties, Texas; Butler, Cowley, and Montgomery Counties, Kansas), and 1 premises had both equine species and cattle clinically affected (Cedar County, Missouri).
Arizona has identified 19 affected premises (18 confirmed positive, 1 suspect) in 7 counties (Apache, Cochise, Gila, Maricopa, Pima, Pinal, and Santa Cruz Counties). Kansas has identified 167 affected premises (90 confirmed positive, 77 suspect) in 21 counties (Allen, Bourbon, Butler, Chase, Cherokee, Coffey, Cowley, Elk, Greenwood, Labette, Linn, Lyon, Marion, Miami, Montgomery, Morris, Neosho, Sedgwick, Sumner, Wilson and Woodson Counties).
Missouri has identified 23 affected premises (14 confirmed positive, 9 suspect) in 4 counties (Cedar, Jasper, Lawrence, and Newton Counties).
Nebraska has identified 4 affected premises (5 confirmed positive) in 2 counties (Buffalo, Gage, and Johnson Counties).
New Mexico has identified 16 affected premises (13 confirmed positive, 3 suspect) in 6 counties (Bernalillo, De Baca, Dona Ana, Eddy, Grant and Sierra Counties).
Oklahoma has identified 13 affected premises (13 confirmed positive) in 7 counties (Adair, Craig, Nowata, Osage, Ottawa, Tulsa, and Washington Counties).
Texas has identified 10 affected premises (10 confirmed positive, 0 suspect) in 6 counties (El Paso, Hudspeth, Kerr, McMullen, Starr, and Zapata Counties).
There have been a total of 133 previously VSV-infected or suspect premises that have completed the quarantine period and been released. To date, all VSV-quarantined premises have been released in New Mexico (since June 4, 2020), Texas (since June 8, 2020), and Arizona (since July 8, 2020). One hundred twenty (120) premises remain under VSV quarantine in Kansas, Missouri, Nebraska and Oklahoma.
To see the complete report visit this page.
