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Published January 25, 2011, 03:43 PM

Virus might affect SD lamb production

SIOUX FALLS, S.D. — A virus that's carried by mosquitoes might be to blame for a reported increase in birth defects and lamb deaths in South Dakota sheep herds.

SIOUX FALLS, S.D. — A virus that's carried by mosquitoes might be to blame for a reported increase in birth defects and lamb deaths in South Dakota sheep herds.

Extension sheep specialist Jeff Held tells South Dakota Public Broadcasting that ewes which are lambing now could have been infected with the Cache (cash) Valley Virus last August or September.

He says birth defects have been reported in a few lambs per flock but it's too early to know the economic impact.

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