Humans, Cattle, Horses, Sheep, Goats, Pigs, Dogs, Buffalo, Reindeer, Deer, and Elk

Overview / Symptoms

  • Caused by parasites that infect red blood cells
  • Spread by Ixodes scapularis (a.k.a. blacklegged ticks or deer ticks)
  • Infected humans often do not have any symptoms, but may experience fever, chills, sweats, headache, body aches, loss of appetite, nausea, or fatigue
  • May be life-threatening for people who don’t have a spleen or have a weakened immune system