M ayo Clinic researchers, in collaboration with the Centers for Disease Control and Prevention (CDC) and health officials from Minnesota, North Dakota and Wisconsin, have discovered a new bacterial species that causes Lyme disease in people.

The new species has been provisionally named Borrelia mayonii. Prior to this finding, the only species believed to cause Lyme disease in North America was Borrelia burgdorferi.

In the paper published recently in The Lancet Infectious Diseases, Mayo Clinic scientists tested samples from U.S. patients from 2003 to 2014 for evidence of Lyme disease using a method called polymerase chain reaction (PCR). From 2012 to 2014, the researchers noticed unusual test results from 6 of 9,000 samples from residents of Minnesota….. Join or login below to continue reading.

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