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  1. May 15, 2024 · Spotted fever rickettsiosis (SFR) annual reported cases 2000-2021. Historical trends of SFR. Seasonality of SFR. States reporting SFR. People at risk of SFR

  2. Jun 19, 2023 · Spotted Fever Rickettsiosis (SFR) refers to a group of related illnesses caused by bacteria in the genus Rickettsia. The two most common SFR illnesses in Virginia are Rocky Mountain spotted fever caused by Rickettsia rickettsii, and Tidewater spotted fever caused by Rickettsia parkeri.

  3. Dec 1, 1970 · In Virginia in 1968, 39 cases of RMSF were reported to the State Health Department. Clinically, these patients exhibited some of the less common complications of the disease: thrombocytopenia, leukopenia, azotemia, liver dysfunction, non-suppurative peritonitis and transverse myelitis.

    • Richard Rothenberg, Daniel E. Sonenshine
    • 1970
  4. Sep 10, 2021 · Rocky Mountain spotted fever (RMSF) is a disease caused by a bacterium called Rickettsia rickettsii. It is transmitted to humans most often by the bite of an infected American dog tick, but the Rocky Mountain wood tick and the brown dog tick have also caused the disease.

  5. Rocky Mountain Spotted Fever. Agent: Rickettsia rickettsi (bacteria) Mode of Transmission: Rocky Mountain spotted fever (RMSF) is transmitted to humans by the bite of an infected American dog tick. Ticks must be attached while feeding for at least 4 to 6 hours to transmit the infection.

  6. Jul 17, 2023 · Rocky Mountain spotted fever (RMSF) is an acute febrile tick-borne illness caused by Rickettsia rickettsii. In North America, it is both the most severe and the most common rickettsial infection. Without prompt antibiotic treatment, mortality rates are as high as 20 to 30 percent.

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  8. History. Rocky Mountain spotted fever (or "black measles" because of its characteristic rash) was recognized in the early 1800s, and in the last 10 years of the 1800s (1890–1900) it became very common, especially in the Bitterroot Valley of Montana.

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