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  2. www.cdc.gov › ClinLab-DiagnosisClinical and Laboratory Diagnosis | Rocky Mountain Spotted ...

    Mar 26, 2021 · Rocky Mountain spotted fever (RMSF) can be difficult to diagnose due to the non-specific signs and symptoms in early stages of illness. Signs and symptoms can vary from patient to patient and can resemble other, more common diseases. Nonetheless, early consideration of rickettsial disease in the differential diagnosis and empiric treatment is ...

  3. www.ncbi.nlm.nih.gov › books › NBK430881Rocky Mountain Spotted Fever (Rickettsia rickettsii ...

    Jul 17, 2023 · Rickettsia rickettsii, the most well-described and most lethal of the spotted group rickettsiae, causes Rocky Mountain spotted fever (RMSF). It is a coccobacillary, obligate, intracellular organism that accidentally infects human hosts after a bite with an infected tick vector. Transmission is believed to occur very quickly after a bite from an ...

    • Jessica Snowden, Kari A. Simonsen
    • 2023/07/17

  4. www.cdc.gov › ticks › tickbornediseasesRocky Mountain Spotted Fever (RMSF) | Tick-borne Diseases ...

    RMSF is most often transmitted by the American dog tick in the Eastern, Central and Western United States; by the Rocky Mountain wood tick in the Rocky Mountain states; and by the brown dog tick in the Southwestern United States, along the U.S.-Mexico border. RMSF can be rapidly fatal if not treated within the first 5 days of symptoms.

  5. www.uptodate.com › contents › epidemiology-clinicalEpidemiology, clinical manifestations and diagnosis of Rocky ...

    Feb 16, 2024 · Rocky Mountain spotted fever (RMSF) is a potentially lethal, but curable tick-borne disease, which was first described in Idaho in the 19 th century. In 1906, Howard Ricketts demonstrated that RMSF was an infectious disease transmitted by ticks [ 1 ]. The clinical spectrum of human infection ranges from mild to fulminant disease [ 2 ].

  6. www.merckmanuals.com › en-ca › professionalRocky Mountain Spotted Fever (RMSF) - Infectious Diseases ...

    Symptoms and Signs of RMSF. 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. Fever reaches 39.5 to 40° C within several days and remains high (for ...

  7. www.merckmanuals.com › en-pr › professionalRocky Mountain Spotted Fever (RMSF) - Infectious Diseases ...

    Symptoms and Signs of RMSF. 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. Fever reaches 39.5 to 40 ° C within several days and remains high (for ...