New York Sees First Local Case of Rare Lyme Bacterium Borrelia mayonii
CDC confirms the first local detection of the Lyme-disease bacterium Borrelia mayonii in New York: a Herkimer County resident tested positive and ticks on the property carried the bacterium, with nine additional B. mayonii–positive adult ticks found later, suggesting local transmission likely involving wildlife. Nationwide testing found no other NY cases. B. mayonii is distinct from the more common Borrelia burgdorferi, though symptom differences are not well understood. The patient also had anaplasmosis and recovered after doxycycline treatment.