BISMARCK, N.D. (AP) — North Dakota's Board of Animal Health has relaxed some hog movement restrictions put in place earlier this year to guard against the spread of a deadly pig virus.

Porcine Epidemic Diarrhea Virus, or PED, has killed millions of pigs in the U.S in the past year. It was confirmed in a swine herd in eastern North Dakota in late February.

The state began requiring any pigs shipped into the state or within the state to have a health certificate stating there have been no clinical signs of PED or a similar virus known as TGE for the last two months on the premises where the pigs originated.

State Veterinarian Susan Keller says the requirement for in-state movement of hogs has been discontinued. The requirement continues for hog imports.

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