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Haemaphysalis longicornis tick reported in nine states.H. longicornis, a vector of serious diseases in humans and animals in East Asian countries, was first identified in the United States on a sheep in New Jersey in 2017. Surveillance of the tick from August 2017 through September 2018 turned up 53 reports in New Jersey, New York, Connecticut, Maryland, Pennsylvania, Virginia, West Virginia, North Carolina, and Arkansas in 36 domestic animals and wildlife species, two humans, and 15 vegetation samples. Neither animals nor ticks were tested for associated pathogens, and no illnesses in humans or animals were reported, but the report's authors warn that H. longicornis is a "potential vector" of agents of human and animal diseases (including Rickettsia, Borrelia, Ehrlichia, Anaplasma, and Theileria), therefore warranting increased surveillance.