What animal causes lyme disease?
Lyme disease present in Europe), "B. afzelii", and "B. garinii" (both predominant in Eurasia). Some studies have also proposed "B. bissettii" and "B. valaisiana" may sometimes infect humans, but these species do not seem to be important causes of disease. Lyme disease is classified as a zoonosis, as it is transmitted to humans from a natural reservoir among small mammals and birds by ticks that feed on both sets of hosts. Hard-bodied ticks of the genus "Ixodes" are the main vectors of Lyme disease (also the vector for "Babesia"). Most infections are caused by ticks in the nymphal stage, because they are
Lyme disease number of infectious diseases that affect the brain, including Lyme. Researchers are investigating if this neurohormone secretion is the cause of neuropsychiatric disorders developing in some patients with borreliosis. Exposure to the "Borrelia" bacterium during Lyme disease possibly causes a long-lived and damaging inflammatory response, a form of pathogen-induced autoimmune disease. The production of this reaction might be due to a form of molecular mimicry, where "Borrelia" avoids being killed by the immune system by resembling normal parts of the body's tissues. Chronic symptoms from an autoimmune reaction could explain why some symptoms persist even after the spirochetes have been