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Wildlife officials say antibodies found in early results of a new vaccine trial are expected to give endangered California condors at least partial protection from the deadliest strain of avian influenza in U.S. history.
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Environmental advocates this week urged the federal government to expedite approvals for a vaccine, warning that the avian flu strain — which has already killed at least 17% of the Arizona-Utah condor flock — is “jeopardizing the existence” of the iconic bird.
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Twenty California condors in northern Arizona and southern Utah have died since March, and half of the endangered birds tested positive for a strain of avian flu.
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Three California condors have died from avian flu in northern Arizona and authorities are trying to determine what killed five others in the flock.
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Arizona egg producer Hickman Family Farms has opted to stop tours and double check its biosecurity program to minimize the chance of a bird flu outbreak. Hickman's has about 2 million egg-laying chickens in Arizona, California and Colorado.