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  2. Jul 2, 2018 · RMSF can be fatal within 7-9 days. All patients with suspected RMSF should receive immediate antibiotic treatment with doxycycline. Use of antibiotics other than doxycycline is associated with a higher risk of fatal outcome from RMSF. Incubation period of 3-12 days following the bite of an infected tick.

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  3. The incubation period for Rocky Mountain spotted fever averages 7 days but varies from 3 to 12 days; the shorter the incubation period, the more severe the infection. Onset is abrupt, with severe headache, chills, prostration, and muscular pains.

  4. Aug 25, 2022 · What are the symptoms of Rocky Mountain spotted fever? Symptoms of Rocky Mountain spotted fever start two days to two weeks after an infected tick bites you. Symptoms usually develop over a few days, starting with fever, headache, nausea, vomiting and muscle pains. Rash develops within three days in about 50% of people.

  5. Rocky Mountain spotted fever (RMSF) is an infection caused by the bite of an infected tick. It may occur anytime the weather is warm, but it most often occurs from April until September. It was first recognized in the Rocky Mountain states.

  6. Feb 10, 2022 · The incubation period in humans is 3-12 day, with an average of 7 days. In the early stages, RMSF fever can be difficult to diagnose. A classic triad of fever, pin-point rash and tick exposure is suggestive; however, the rash appears several days after the other symptoms, and the tick may not have been noticed.