What causes Lyme disease?

Lyme disease is transmitted to humans through the bite of an infected deer tick (blacklegged tick). Once one is bit by an infected tick, the bacteria gets into the bloodstream causing infection. The following species of bacteria cause Lyme disease:
  • Borrelia burgdorferi
  • Borrelia mayonii
  • Borrelia afzelii
  • Borrelia garinii
Borrelia burgdoferi and Borrelia mayonii are the leading cause of Lyme disease in the United States, while Borrelia afzelii and Borrelia garinii are the leading cause of Lyme disease in Europe and Asia. The ticks that cause Lyme disease (deer ticks) are typically brown and can sometimes be as small as a poppy seed. They usually need to be attached to one’s skin for at least 36-48 hours to cause infection. 
Lyme disease causes

  • "Lyme disease." Mayo Clinic. Mayo Foundation for Medical Education and Research, 03 Apr. 2016. Web. 04 Nov. 2017.
  • “Lyme Disease.” Johns Hopkins Medicine Health Library. Johns Hopkins Medicine Health Library, n.d. Web. 04 Nov. 2017.
  • “Lyme Disease.” Centers for Disease Control and Prevention. CDC, 14 Aug. 2017. Web. 04 Nov. 2017. 



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