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Study Shows Africanized Bees Continue to Spread in California

A study conducted by biologists at UC San Diego has found that the Africanized honey bee—an aggressive hybrid of the European honey bee—is continuing to expand its range northward since its introduction into Southern California in 1994.

The study, published in this week’s edition of the journal PLOS One, found that more than 60 percent of the foraging honey bees in San Diego County are Africanized and that Africanized bees can now be found as far north as California’s delta region.