Yahoo Web Search

    • at A Glance
    • Historical Trends
    • Seasonality
    • Geography
    • People at Risk
    The number of SFR cases has risen in the last two decades, from 495 cases in 2000, to a peak of 6,248 in 2017. However, cases reported in 2018 were slightly lower.
    Because of the inability to differentiate between spotted fever group Rickettsia species using commonly available serologic tests, it is unclear how many of those cases are RMSF, and how many resul...
    The number of SFR cases reported to CDC per year have generally increased over time with distinct increases since the mid-1990s.
    Notably, while the number of cases and incidence rose, the case fatality rate (i.e., the proportion of SFR patients that died as a result of infection) has declined since the 1940s when tetracyclin...
    The current case fatality rate for SFRs using surveillance data is still roughly 0.5% of cases.
    Although SFR cases can occur during any month of the year, most cases reported illness in May–August.
    This period coincides with the season when adult Dermacentorticks are most active.
    Seasonal trends may vary depending on the area of the country and tick species involved.
    SFR cases have been reported throughout the contiguous United States, although five states (Arkansas, Missouri, North Carolina, Tennessee, and Virginia) account for over 50% of SFR cases.
    In Arizona, RMSF cases have recently been identified in an area where the disease had not been previously seen. From 2003 to 2018, nearly 430 cases were reported with a case-fatality rate of about 5%.
    SFR cases are more frequently reported in men than in women.
    People over the age of 40 years account for the highest number of reported cases, however, children under 10 years old represent the highest number of reported deaths.
    Persons with glucose-6-phosphate dehydrogenase (G6PD) deficiency.
    Surveillance data shows higher risk for hospitalization in people with compromised immune systems (e.g., resulting from cancer treatments, advanced HIV infection, prior organ transplants, or some m...
  1. Rocky Mountain spotted fever | Britannica

    www.britannica.com/.../Rocky-Mountain-spotted-fever

    Rocky Mountain spotted fever, form of tick-borne typhus first described in the Rocky Mountain section of the United States, caused by a specific microorganism (Rickettsia rickettsii). Discovery of the microbe of Rocky Mountain spotted fever in 1906 by H.T. Ricketts led to the understanding of other rickettsial diseases.

  2. Regions where ticks live | Ticks | CDC

    www.cdc.gov/ticks/geographic_distribution.html

    Apr 02, 2020 · Transmits: Rocky Mountain spotted fever (in the southwestern U.S. and along the U.S.-Mexico border). Comments: Dogs are the primary host for the brown dog tick in each of its life stages, but the tick may also bite humans or other mammals.

  3. History of Rocky Mountain Labs (RML) | NIH: National ...

    www.niaid.nih.gov/about/rocky-mountain-history

    Three interesting reads on the story of early spotted fever research and the origins of the Rocky Mountain Laboratories are: Fighting Spotted Fever In the Rockies by Ester Gaskins Price, Naegele Printing Company, 1947; Rocky Mountain Spotted Fever, History of a Twentieth-Century Disease by Victoria A. Harden, Johns Hopkins University Press ...

  4. Rocky Mountain spotted fever - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/diseases-conditions/rocky...
    • Overview
    • Symptoms
    • Causes
    • Risk Factors
    • Complications
    • Prevention

    Rocky Mountain spotted fever is a bacterial infection transmitted by a tick. Without prompt treatment, Rocky Mountain spotted fever can cause serious damage to internal organs, such as your kidneys and heart.Although it was first identified in the Rocky Mountains, Rocky Mountain spotted fever is most commonly found in the southeastern part of the United States. It also occurs in parts of Canada, Mexico, Central America and South America.Early signs and symptoms of Rocky Mountain spotted fever...

    Although many people become ill within the first week after infection, signs and symptoms may not appear for up to 14 days. Initial signs and symptoms of Rocky Mountain spotted fever often are nonspecific and can mimic those of other illnesses: 1. High fever 2. Chills 3. Severe headache 4. Muscle aches 5. Nausea and vomiting 6. Confusion or other neurological changes

    Rocky Mountain spotted fever is caused by infection with the organism Rickettsia rickettsii. Ticks carrying R. rickettsii are the most common source of infection.If an infected tick attaches itself to your skin and feeds on your blood for six to 10 hours, you may pick up the infection. But you may never see the tick on you.Rocky Mountain spotted fever primarily occurs when ticks are most active and during warm weather when people tend to spend more time outdoors. Rocky Mountain spotted fever...

    Factors that may increase your risk of contracting Rocky Mountain spotted fever include: 1. Living in an area where the disease is common 2. The time of year — infections are more common in the spring and early summer 3. How much time you spend in grassy or wooded areas 4. Whether you have a dog or spend time with dogsIf an infected tick attaches to your skin, you can contract Rocky Mountain spotted fever when you remove it, as fluid from the tick can enter your body through an opening such a...

    Rocky Mountain spotted fever damages the lining of your smallest blood vessels, causing the vessels to leak or form clots. This may cause: 1. Inflammation of the brain (encephalitis). In addition to severe headaches, Rocky Mountain spotted fever can cause inflammation of the brain, which can cause confusion, seizures and delirium. 2. Inflammation of the heart or lungs. Rocky Mountain spotted fever can cause inflammation in areas of the heart and lungs. This can lead to heart failure or lung f...

    You can decrease your chances of contracting Rocky Mountain spotted fever by taking some simple precautions: 1. Wear long pants and sleeves. When walking in wooded or grassy areas, wear shoes, long pants tucked into socks and long-sleeved shirts. Try to stick to trails and avoid walking through low bushes and long grass. 2. Use insect repellents. Products containing DEET (Off! Deep Woods, Repel) often repel ticks. Be sure to follow the instructions on the label. Clothing that has permethrin i...

  5. Cougars are re-populating their historical range, new study ...

    www.sciencedaily.com/releases/2012/06/...

    Jun 14, 2012 · American mountain lions, or cougars, are re-emerging in areas of the United States, reversing 100 years of decline. The evidence raises new conservation questions, such as how humans can live ...

  6. United States Map - World Atlas

    www.worldatlas.com/maps/united-states.html

    Location of US. The map above shows the location of the United States within North America, with Mexico to the south and Canada to the north. Found in the Western Hemisphere, the country is bordered by the Atlantic Ocean in the east and the Pacific Ocean in the west, as well as the Gulf of Mexico to the south.

  7. Old Maps Online

    www.oldmapsonline.org

    Welcome to Old Maps Online, the easy-to-use gateway to historical maps in libraries around the world. Find a place Browse the old maps. Share on

  8. History Through Photographs Photographs of Old America offers over 700 historical images. Our most extensive galleries feature old photos of New York, San Francisco and other California cities. We also offer images of antique cars, World War II scenes, entertainers, women and many other nostalgic scenes of daily life. Our photo collection

  9. Google Maps

    maps.google.com

    Find local businesses, view maps and get driving directions in Google Maps.