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Identifies new threats to wild bees

March 5, 2015 Last updated at 12:07 GMT

Is found infected held bumblebees in nature with many diseases in bees by beekeepers, according to a national survey.

With wild bees in decline due to loss of habitat and pesticides, which could have a major impact on native bees, scientists Royal Holloway, University of London say.

More details of BBC correspondent Environment, Helen Briggs.

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