New Lyme Disease Bacteria Crawling Through the Midwest, CDC Finds

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Researchers have discovered new Lyme disease-causing bacteria, Borrelia mayonii (B. mayonii) in the upper Midwest. Infection may trigger nausea, vomiting, and a more widespread rash, officials say.

Researchers have discovered new Lyme disease-causing bacteria, Borrelia mayonii (B. mayonii) in the upper Midwest. Infection may trigger nausea, vomiting, and a more widespread rash, officials say.

The CDC and state health departments in Minnesota, North Dakota, and Wisconsin are currently seeking to learn more about B. mayonii.

Unusual lab test results revealed the first six patients were infected with B. mayonii-linked Lyme disease by blacklegged ticks in north-central Minnesota and western Wisconsin.

Initial findings from the CDC and Mayo Clinic in Rochester, MN, showed the illness caused by the new bacteria is similar to the original Lyme disease-causing bacteria — Borrelia burgdorferi (B. burgdorferi). Both result in fever, headache, rash, and neck pain in the first days after infection, and arthritis weeks after infection.

However, reports show that B. mayonii also causes nausea and vomiting, widespread rashes, and higher concentration of bacteria in the bloodstream.

To better understand the diseases triggered from the bacteria and the areas populated with the infected ticks, the CDC has funded a three-year program to collect up to 30,000 specimens from individuals even suspected to carry the tick-borne illness.

Ben Beard, chief of CDC’s Bacterial Diseases Branch, commented in a news release, “Coupling technology with teamwork between federal, state, and private entities will help improve early and accurate diagnosis of tick-borne disease.”

Existing Lyme disease detecting tests like polymerase chain reaction assays (PCR) also work for B. mayonii and the same antibiotics can be prescribed to treat both.

Nonetheless, CDC officials urge healthcare providers treating patients with the new species to cautiously follow the Infectious Diseases Society of America’s antibiotic guidelines.

Awareness about preventative methods is still key. Bobbi Pritt, MD, director of the Clinical Parasitology Laboratory, Mayo Clinic, commented, “The public should continue to take the recommended precautions against tick bites, as Lyme disease and other tick-borne disease are well-established in much of the Northeast.”

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