Tickborne Infections

Understanding Tickborne Disease

As people build homes or travel in formerly uninhabited wilderness areas where ticks and their animal hosts live, tickborne diseases caused by viruses, bacteria, and parasites, are becoming a more frequent health problem.

Tickborne Diseases in the United States

  • Lyme disease, ehrlichiosis, and anaplasmosis
  • Rocky Mountain spotted fever (RMSF)
  • Babesiosis
  • Colorado tick fever (CTF)
  • Tularemia (rare)

Tick Season

Tick season runs from April to September, with peak months being May through August.

Disease Transmittal

Tick species vary by geographical area. Only the bites of certain tick species can transmit disease to humans.