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  2. Oct 26, 2018 · It is spread by several species of ticks in the United States, including the American dog tick ( Dermacentor variabilis) [PDF – 1 page], Rocky Mountain wood tick ( Dermacentor andersoni) [PDF – 1 page], and, in parts of the southwestern United States and Mexico, the brown dog tick ( Rhipicephalus sanguineus) [PDF – 1 page].

    • How Do I Take Care of Myself If I Have Rocky Mountain Spotted Fever?
    • When Should I See My Healthcare Provider About Rocky Mountain Spotted Fever?
    • What Questions Should I Ask My Doctor?

    If your provider is treating you for Rocky Mountain spotted fever, make sure you take all of your medicine as prescribed. If you stop taking antibiotics before the end of the course, you may get sick again. Your provider can tell you how to manage your symptoms at home best. RMSF can get worse quickly. Call your provider right away if you have new ...

    If you have a tick bite or have been in an area with ticks and have symptoms of RMSF, see your healthcare provider right away. If you have a tick bite but don’t have any symptoms, you don’t need to see your provider yet — taking antibiotics when you’re not sick won’t help prevent RMSF.

    How do I take my medication?
    What new or worsening symptoms should I look out for?
    How soon should I feel better?
    When should I follow up with you?
  3. RMSF is transmitted, or spread, through the bite of a tick that’s infected with a bacterium known as Rickettsia rickettsii. The bacteria spread through your lymphatic system and multiply in your...

  4. Jul 17, 2023 · R. rickettsia transmits into human hosts by the bite of an infected tick. Humans are not a natural reservoir of disease. The Rickettsia does not harm the tick.

    • Jessica Snowden, Kari A. Simonsen
    • 2023/07/17
  5. It's not spread from person to person. What causes Rocky Mountain spotted fever? RMSF is caused by a bacterium that is spread to people by the bite of an infected tick. In different parts of the U.S., these ticks can transmit the RMSF bacteria: American dog tick. Rocky Mountain wood tick. Brown dog tick. Lone star tick. Who is at risk for Rocky ...

  6. Epidemiology. Pathophysiology. Symptoms and Signs. Diagnosis. Treatment. Prevention. Key Points. More Information. Rocky Mountain spotted fever (RMSF) is caused by Rickettsia rickettsii and transmitted by ixodid ticks. Symptoms are high fever, severe headache, and rash. (See also Overview of Rickettsial and Related Infections .)

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