In a development that could save the US economy tens of billions of dollars, researchers have developed a technique to immunize honey bees against two major pathogens using bioengineered bacteria.

Last winter, US beekeepers lost 40 percent of their honey bees; it was the highest mortality rate since national surveying began 13 years ago. Honey bees contribute approximately $20 billion-worth of value to US crop production, so safeguarding them is huge from both an economic and conservation standpoint.



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