Livestock News

Exotic tick heads south; USDA confirms Arkansas dog case


The exotic East Asian tick that first showed up in New Jersey is clearly on the move, this time showing up in Arkansas. On June 5, the USDA National Veterinary Services Laboratory confirmed the presence of the Longhorned tick (Haemaphysalis longicornis) in the state.

The confirmed Longhorned tick came from a dog in Benton County and was submitted through a research project at Oklahoma State University. NVSL was able to confirm the Longhorned through a photograph and via molecular typing. Epidemiological investigation and further evaluation of this case is ongoing in cooperation with the USDA Animal and Plant Health  Inspection Service (APHIS).

The Longhorned is an exotic East Asian tick associated with bacterial and viral tickborne diseases of animals and humans in other parts of the world. This
tick is considered by USDA to be a serious threat to livestock because heavy infestations may cause stunted growth, decreased production, and animal deaths. In other countries, the Longhorned tick has been implicated in causing disease in humans, including severe fever with thrombocytopenia syndrome. Like deer-ticks, the nymphs of the Longhorned are very small (resembling tiny spiders) and can easily go unnoticed on animals and people. This tick is known to infest a wide range of species and has the potential to infect multiple North American wildlife species, humans, dogs, cats, and livestock.

In November of 2017, USDA APHIS first identified the Longhorned tick in New Jersey. This was the first confirmed presence in the United States.The Longhorned was subsequently found in Virginia and West Virginia. There are no known direct links between the cases in Arkansas, West Virginia, Virginia, or New Jersey.

The Agriculture Department’s Arkansas Livestock and Poultry Commission is working with the Arkansas Department of Health, the Arkansas Game and Fish Commission, USDA APHIS Veterinary Services, Arkansas Veterinary Medical Association, and Arkansas Cattlemen’s Association to increase outreach activities, educate veterinary practitioners, and encourage tick submissions for additional surveillance.

“Livestock producers, animal owners, and veterinarians should notify the Arkansas Agriculture Department or USDA APHIS if they notice any unusual ticks, or ticks that occur in large numbers on an individual animal,” says State Veterinarian Dr. Brandon Doss. “We encourage livestock producers to work with their veterinarians to develop a tick prevention and control program.”

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