Mysterious ringed seal disease may have spread to polar bears

04/7/2012 | Reuters

During routine monitoring of polar bears in Alaska, U.S. Geological Survey officials encountered nine animals with bald patches and sores similar to the lesions seen on ringed seals and walruses afflicted with a still-unidentified illness. The disease can be fatal in seals and walruses, but no affected polar bears have died so far, and officials are looking for possible links between the polar bear lesions and the seal and walrus deaths.

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