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Agricultural News

Dr. Rod Hall Says be on the Lookout for Symptoms of Vesicular Stomatitis

Fri, 26 Jun 2020 10:04:53 CDT

Dr. Rod Hall Says be on the Lookout for Symptoms of Vesicular Stomatitis Dr. Rod Hall, State Veterinarian warns that Vesicular Stomatitis is continuing to spread. The disease is spreading rapidly in south central Kansas so if you’re in northern Oklahoma please pay particular attention and be on the alert for suspect cases and continue to report them to us. You can see the latest report below.

Vesicular stomatitis (VS) is a viral disease that primarily affects horses and cattle and occasionally swine, sheep, goats, llamas, and alpacas. Humans can also become infected with the disease when handling affected animals, but this is a rare event. Vesicular stomatitis has been con?rmed only in the Western Hemisphere. It is known to be an endemic disease in the warmer regions of North, Central, and South America, and outbreaks of the disease in other temperate geographic parts of the hemisphere occur sporadically. The Southwestern and Western United States have experienced a number of vesicular stomatitis outbreaks, the most recent and largest VS outbreak occurred in 2015. Outbreaks usually occur during the warmer months, often along waterways. The time from exposure to the onset of clinical signs is 2-8 days. VS is a state reportable disease.

You can read the latest USDA Situation Report here: <https://www.aphis.usda.gov/animal_health/downloads/animal_diseases/vsv/sitrep-06-24-20.pdf>

Hall says "Please make your clients aware that livestock or horses traveling from a County that has had VSV diagnosed within the past 30 days (30) days or a county that contains a premises quarantined for vesicular stomatitis shall be accompanied by a certificate of veterinary inspection dated within five (5) days of entry containing the following statement: "All animals identified on this certificate of veterinary inspection have been examined and found to be free from signs of vesicular stomatitis and have not originated from a premise which is under quarantine for vesicular stomatitis.Please be on the lookout for symptoms of the disease and let us know if you see livestock or horses with symptoms."

Summary of Key Information:
On June 24, 2020, the National Veterinary Services Laboratories in Ames, Iowa confirmed a finding of vesicular stomatitis virus (VSV) infection (Indiana serotype) on an equine premises in Buffalo County, Nebraska. One horse on the premises met the VSV confirmed case definition with compatible clinical signs and a complement fixation test (CFT) titer of 1:40 or greater. This is the 2020 VSV index case for Nebraska.

Index Premises (Nebraska): The index premises in Nebraska is located in Buffalo County and has a total of 4 horses present. Two horses are currently showing clinical signs of VSV infection (muzzle/lip lesions) which were first noted around June 17th. There are no other susceptible species on the premises and the epidemiological investigation is ongoing. Biosecurity measures and vector mitigation have been instituted to reduce the within-herd spread of the virus. The animals are being monitored and the premises will remain under state quarantine until 14 days from the onset of lesions in the last affected animal on the premises.

Additionally, since the last situation report (6/19/2020), there have been 16 new VSV-affected premises identified (14 confirmed positive, 2 suspect) in 1 state. Updates are as follows:

Arizona (no new cases)
·       Since the last situation report, 2 VSV-affected premises have been released from quarantine in Apache and Maricopa Counties.   

Kansas (14 new confirmed, 2 new suspect premises)
·       Butler County - 9 new confirmed positive, 2 new suspect premises (all equine)
·       Cowley County - 1 new confirmed positive equine premises
·       Sedgwick County (New Infected County) - 4 confirmed positive equine premises

Since the start of the outbreak (4/13/2020), 77 VSV-affected premises have been identified (63 confirmed positive, 14 suspect). Seventy-three (73) of these premises had only equine species clinically affected and 4 premises had clinically affected cattle (McMullen, Starr, and Zapata Counties, Texas).

Arizona has identified 18 affected premises (17 confirmed positive, 1 suspect) in 7 counties (Apache, Cochise, Gila, Maricopa, Pima, Pinal, and Santa Cruz Counties). Kansas has identified 32 affected premises (22 confirmed positive, 10 suspect) in 3 counties (Butler, Cowley, and Sedgwick Counties). Nebraska has identified 1 affected premises in 1 county (Buffalo County). 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). 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 42 previously VSV-infected or suspect premises that have completed the quarantine period and been released. Thirty-five (35) premises remain under VSV quarantine in Arizona, Kansas, and Nebraska.

The attached complete situation report will be posted to the APHIS website tomorrow. All VSV sitreps are available at the following link:



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