00:00Asian long-horned ticks spread Thilaria in East Coast cattle farms.
00:05An Asian long-horned tick crawls across a Virginia blade of grass.
00:10East Coast farms now watch a tiny invader carrying a cattle pathogen.
00:14Asian long-horned ticks cling to tall pasture grass, where females can reproduce without
00:20males and quickly cover a grazing field.
00:23Virginia veterinarians found Thilaria orientalis akita in cattle, a blood parasite that can
00:28cause anemia, weakness, and sudden death.
00:31A brown cow stands under a fence line, while infected ticks feed near the ears, tail, and
00:37belly.
00:38Farm workers drag white tick cloths through Virginia pastures, then check the fabric for
00:43moving brown specks.
00:45Asian long-horned ticks have appeared across multiple East Coast states since 2017, spreading
00:52through deer, livestock, pets, and brush.
00:54A sick calf breathes hard beside a water trough, while pale gums can signal damaged red blood
01:01cells.
01:02A deer pushes through roadside weeds, carrying ticks from wooded edges into farms, yards, and
01:08fence rows.
01:09A rancher checks cattle legs and ears after turnout, because early tick removal can reduce
01:14heavy infestations.
01:17veterinarians test blood samples under lab lights, searching for parasite DNA that confirms
01:22the dangerous infection.
01:24Pastures, deer trails, fence lines, and cattle barns give the Asian long-horned tick many places
01:30to spread.
01:31One tick on a cowhide can become a pasture problem before the herd shows warning signs.
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