1. Headline
  1. Headline
By
updated 5/18/2012 3:28:19 PM ET 2012-05-18T19:28:19

Officials have lifted quarantines on two Central California dairies linked to a case of mad cow disease, after investigators found the illness didn't come from cattle feed.

  1. More from TODAY.com
    1. Are you One Direction's best fan ever? Show us why!

      Are you One Direction's best fan ever? We want to hear from you!

    2. Alleged photos of Jennifer Lawrence, Kate Upton leak
    3. Paper, no plastic? Calif. set to ban plastic bags
    4. Young cancer patient’s reaction to going home goes viral
    5. Amazing catch made after drone batteries dies

Tests performed by the World Organization for Animal Health confirmed what U.S. labs had found: The diseased cow had a form of the illness involving a spontaneous mutation of a protein gene that hasn't caused illness in humans.

The cases of mad cow reported across Great Britain in the 1990s were caused by cattle being fed protein supplements made from the spinal columns and brains of diseased cows. That practice has since been banned.

The case in Tulare County was discovered through random testing.

Officials have not released the names of the affected dairies, which had been shuttered since April 24.

Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Discuss:

Discussion comments

,

Most active discussions

  1. votes comments
  2. votes comments
  3. votes comments
  4. votes comments

More on TODAY.com

  1. TODAY

    video Alleged photos of Jennifer Lawrence, Kate Upton leak

    9/1/2014 12:03:52 PM +00:00 2014-09-01T12:03:52
  1. TODAY

    video Before and after photos explain the stress of school

    9/1/2014 1:17:37 PM +00:00 2014-09-01T13:17:37
  1. TODAY

    video Dad makes amazing drone catch after batteries die over lake

    9/1/2014 12:11:36 PM +00:00 2014-09-01T12:11:36
  1. TODAY

    video Young cancer patient’s reaction to going home goes viral

    9/1/2014 1:18:28 PM +00:00 2014-09-01T13:18:28