21. Rocky Mountain Spotted Fever (RMSF) Translate this page rocky mountain spotted fever (RMSF). Rickettsiosen. Kurzinfo Rickettsioserocky mountain spotted fever (RMSF). Inkubationszeit 3-6 Tage. Symptome. http://www.medizinfo.com/waldundwiese/rocky_mountain_spotted_fever.shtml

Service unterstützt durch: Jetzt Ratgeber kostenlos im MedizInfo®Shop anfordern. Wissenswertes über Zecken FAQ Zecken Entfernung von Zecken Forschung ... Heuschnupfen Häufige Zeckenkrankheiten: Borreliose FSME Weitere Zeckenkrankheiten: Babesiose Ehrlichiose Rickettsiosen Rocky Mountain Spotted Fever ... Zeckenlähmung Rocky Mountain Spotted Fever (RMSF) Rickettsiosen Kurzinfo: Rickettsiose: Rocky Mountain Spotted Fever (RMSF) Inkubationszeit: 3-6 Tage Symptome Punktförmigen Hauteinblutungen, Fieber, Kopfschmerzen, Übelkeit, Erbrechen, Myalgien. Im weiteren Verlauf systemischer Befall mit u.a. Lungenödem, Arrhythmien oder Enzephalitis, Hypovolämie. Wann zum Arzt? Bei Verdacht sofort. Therapie Antibiotika. Doxycyclin Vorbeugung Vor Zeckenbissen schützen. Zecke innerhalb von 6 Stunden entfernen. Bäh. Die Dinger habe ich nicht. Ich bin schließlich eine Schildzecke und lebe im world wide web. Warum sich auf Kontinente beschränken? Das Rocky Mountain Spotted Fever (RMSF) gehört zu den Rickettsiosen und wird durch das Bakterium Rickettsia rickettsii hervorgerufen. Das Bakterium wird durch verschiedene Zeckenarten (Amblyomma, Rhipicephalus, Dermacentor) übertragen und kommt vornehmlich in Nord- und Südamerika vor. Die Übertragung erfolgt 6 Stunden nach dem Zeckenstich. Wird die Zecke vor Ablauf dieser Zeit entdeckt und entfernt, so ist eine Übertragung unwahrscheinlich. Hauterscheinungen treten nur bei etwa der Hälfte der Fälle auf.

22. LDF -- Rocky Mountain Spotted Fever (RMSF) rocky mountain spotted fever (RMSF). Click on either picture to go to ImageGallery RMSF rash. Spotted fever, rickettsial group in tick tissue. http://www.lyme.org/otherdis/rmsf.html

Rocky Mountain Spotted Fever (RMSF) Click on either picture to go to Image Gallery RMSF rash Spotted fever, rickettsial group in tick tissue RMSF, one type of spotted fever, is caused by Rickettsia rickettsii and is reported from across North America, but is most prevalent in the eastern U.S. The Rocky Mountain wood, American dog, and Pacific Coast ticks transmit the disease. The lone star ticks also transmits a spotted fever Rickettsia that causes similiar symptoms. Signs/Symptoms: Flu-like aches and pain, headache, chills, confusion, light sensitivity, and high fever. A reddish-to-black rash (resembling measles) starts on the extremities (e.g. wrists and ankles) and may spread to the entire body. Death can occur. Doctors must take a clinical diagnosis and treat early as the main cause of death is delayed or improper treatment.

23. Hardin MD : Rocky Mountain Spotted Fever From the University of Iowa, the *best* lists of Internet sourcesin rocky mountain spotted fever. rocky mountain spotted fever. http://www.lib.uiowa.edu/hardin/md/rockyfever.html

Rocky Mountain Spotted Fever "We list the best sites that list the sites" Site Map Diseases Home Free journals ... Diseases Search Hardin MD See also: Home Insect Bites Lyme Disease Med Pictures All links on this page hand-checked Popular Women's Health Dermatology Nursing Pharm Infect Disease Related : Insect Bites Medical Pictures Lyme Disease Pictures A Hardin MD Focus Page Yahoo : Rocky mountain spotted fever NOAH: Rocky mountain spotted fever NY Online Access to Health Open Directory Project : Health : ... Infectious diseases : .... : Rocky mountain spotted fever (Other versions: Google AOL Rocky Mountain Spotted Fever Pictures MEDLINEplus Health Encyclopedia : Rocky mountain spotted fever A.D.A.M. / National Library of Medicine Rocky mountain spotted fever DermAtlas (Dermatology Image Atlas), Johns Hopkins Univ Rickettsia, Ehrlichia, Coxiella, and Bartonella Hardin Library for the Health Sciences , University of Iowa Please send comments to hardin-webmaster@uiowa.edu The URL for this page is http://www.lib.uiowa.edu/hardin/md/rockyfever.html Last updated Monday, Jan 20, 2003 [pictures of tick bites, pictures ticks, rocky mountain spotted fever photo, picture of rocky mountain fever] [10338

24. Rocky Mountain Spotted Fever rocky mountain spotted fever is a disease caused by a microorganism transmittedto humans by the bite of an infected tick. rocky mountain spotted fever. http://healthlink.mcw.edu/article/955142302.html

Search Articles: search tips Please Take the HealthLink Survey Email this article Print this article Find related articles: By topic: Infections/Infectious Diseases By keywords: Receive Health Link via email! Subscribe now >> Rocky Mountain Spotted Fever What is Rocky Mountain spotted fever? Rocky Mountain spotted fever (RMSF) is a disease caused by a microorganism transmitted to humans by the bite of an infected American dog tick ( Dermacentor variabilis ) and by several other tick species. Only 15 cases were reported in Wisconsin between 1980 and 1998, and most of these infections were acquired outside of Wisconsin. Who gets RMSF? RMSF is rare in Wisconsin. The majority of cases in the U.S. occur in the southeastern states. In spite of its name, the disease is not common in the mountain states. Children and young adults are most frequently affected. Disease incidence is directly related to exposure to tick infested habitats. How is RMSF spread? RMSF is spread by the bite of an infected tick (the American dog tick, the lone-star tick or the wood tick) or by contamination of the skin with the tick's body fluids or feces. Person to person and direct animal to human transmission of RMSF does not occur.

25. Diseases And Conditions -- Discovery Health -- Rocky Mountain Spotted Fever rocky mountain spotted fever is an infection with fever and rash. Rocky Mountainspotted fever By Danielle Zerr, MD Images (click to view larger image) http://health.discovery.com/diseasesandcond/encyclopedia/381.html

Rocky Mountain spotted fever By Danielle Zerr, MD Images (click to view larger image) Rocky Mountain spotted fever is an infection with fever and rash . It is usually transmitted from a bite of an infected tick. What is going on in the body? Rocky Mountain spotted fever occurs mainly in the southeast and south central part of the US. It is found most often in Texas, Oklahoma, and Arkansas. It is more common in the spring and summer. The organism that causes the fever, Rickettsia rickettsii, is transmitted to humans through the bite of a tick. The species of tick involved may vary, depending on the location. What are the signs and symptoms of the infection? The time from tick bite to symptoms of Rocky Mountain spotted fever ranges from 2 days to 2 weeks. The typical symptoms include: fever headache muscle aches nausea and vomiting confusion coma a rash that begins sometime before the sixth day of illness The rash starts on the hands and feet, including the palms and soles. It then spreads to the ankles, wrists, abdomen, and trunk. What are the causes and risks of the infection?

26. HealthlinkUSA Rocky Mountain Spotted Fever Links treatment process. FindWhat. Click here for page 1 of Rocky MountainSpotted Fever information from the HealthlinkUSA directory. http://www.healthlinkusa.com/429ent.htm

27. Rocky Mountain Spotted Fever; Treatment, Prevention, Cure rocky mountain spotted feverSearch information from many of the best Rocky MountainSpotted Fever health sites. What is rocky mountain spotted fever? http://www.healthlinkusa.com/content/429.html

Latest Health News Find Drug Information Health Calculators All Words Any Words A B C D ... Z Sunday, March 30, 2003 Alternative therapy struggles to bridge East-West divide Click here to read more Doctors are not following guidelines recommending flu and pneumonia vaccinations for hospitalized adults, leaving millions of elderly patients vulnerable to potentially deadly ailment Click here to read more A helping hand for uninsured; Agencies find ways to provide health care for area children Click here to read more The government has approved the first generic version of the acne drug, Accutane Click here to read more Gates to give India $100m for AIDS; Microsoft CEO begins controversy-laced trip to fight virus Click here to read more Allergies and Asthma Alternative Medicine Arthritis and Your Health ... Women's Health Monday March 31, 2003 Spina Bifida: Spina Bifida is a rare birth disorder, affecting approximately 1 in 12-1400 live births. Click here to learn more Craniosynostosis: Sagittal Synostosis...males are affected about three times as often as females. Click here to learn more Spinal Cord Injury: Acts of violence have now overtaken falls as the second most common source of spinal cord injury.

28. NJDHSS, Communicable Disease Service: Rocky Mountain Spotted Fever What You Should Know About. . . rocky mountain spotted fever. What is RockyMountain spotted fever? How do people get rocky mountain spotted fever? http://www.state.nj.us/health/cd/f_rocky.htm

Disease Index NJ InTouch What You Should Know About. . . Rocky Mountain Spotted Fever What is Rocky Mountain spotted fever? Rocky Mountain spotted fever is an illness caused by infection with the bacterium Rickettsia rickettsii How do people get Rocky Mountain spotted fever? People become infected with Rickettsia rickettsii through the bite of an infected ixodid (hard) tick. Where is Rocky Mountain spotted fever found? Rocky Mountain spotted fever is found throughout the U.S., primarily from April through September. Nearly 50% of cases reported in 1993 were from the South Atlantic region, and over 20% were from the western southern-central region; the highest incidence rates were seen in North Carolina and Oklahoma. What are the symptoms of Rocky Mountain spotted fever? Initial signs and symptoms of Rocky Mountain spotted fever include sudden onset of fever, headache and muscle pain, followed by development of a rash which generally first appears on the extremities. How soon do symptoms occur? Symptoms occur three to 14 days after the bite of an infected tick.

29. Rocky Mountain Spotted Fever Surveillance Case Definition. rocky mountain spotted fever, (Rickettsiarickettsi). What you should know about rocky mountain spotted fever? http://www.state.nj.us/health/cd/cd_rocky.htm

Disease Index NJ InTouch Surveillance Case Definition Rocky Mountain Spotted Fever, Rickettsia rickettsi CLINICAL DESCRIPTION A tick borne febrile illness most commonly characterized by acute onset, and usually accompanied by myalgia, headache, and a petechial rash (on palms and soles in two thirds of the cases). In the northeastern, United States, the dog tick is responsible for most transmissions, although history of tick exposure is not always found. The incubation period is 3 to more than 14 days. CASE CLASSIFICATION CONFIRMED A clinically compatible case AND one or more of the following laboratory tests: Fourfold or greater rise in antibody titer to Rickettsia rickettsii antigen by immuno-fluorescence antibody (IFA), complement fixation (CF), latex agglutination (LA), microagglutination (MA), or indirect hemagglutination antibody (IHA) test in acute- and convalescent-phase specimens ideally taken greater than or equal to 3 weeks apart, OR Positive PCR assay to Rickettsia rickettsii OR Demonstration of positive immunofluorescence of skin lesion biopsy or organ tissue, OR Isolation of Rickettsia rickettsii from a clinical specimen.

30. Rocky Mountain Spotted Fever rocky mountain spotted fever. Additional links CDC information on RockyMountain spotted fever 1. Centers for Disease Control and Prevention. http://www.niaid.nih.gov/newsroom/focuson/bugborne01/rockym.htm

Rocky Mountain Spotted Fever Rocky Mountain spotted fever (RMSF) is caused by tiny bacteria called rickettsiae that live inside the cells of infected individuals. It has been reported throughout the United States, but is most prevalent in the South Atlantic and South-Central states. In 1999, 579 cases were reported to the CDC. The bacterial species responsible for RMSF, Rickettsia ricketsii , is passed to humans through the bite of a tick. Once in the bloodstream, the microbes enter the endothelial cells that line the blood vessels, and there they reproduce. As the bacteria divide, they spread throughout the circulatory system and invade more endothelial cells. Sites of infection can swell, and red blood cells can leak out of the vessels into surrounding tissues. RMSF symptoms include fever, headache, rash, and muscle aches. The characteristic rash is an important indicator of infection. The disease can usually be cured with antibiotics, especially when given early. No vaccine is available. NIAID Research Learning the Secrets of Rickettsial Infections Several studies seek detailed information on how R. rickettsii

31. Nebraska HHS System: Rocky Mountain Spotted Fever Epidemiology Fact Sheet rocky mountain spotted fever Fact Sheet. What is Rocky Mountain SpottedFever? Rocky Who gets rocky mountain spotted fever? Anyone http://www.hhs.state.ne.us/epi/rmsf.htm

Rocky Mountain Spotted Fever Fact Sheet What is Rocky Mountain Spotted Fever? Rocky Mountain Spotted Fever is a rickettsial disease caused by the organism, Rickettsia rickettsii . It is transmitted by the bite of an infected tick and results in a systemic, febrile illness. Who gets Rocky Mountain Spotted Fever? Anyone can become ill with Rocky Mountain Spotted Fever. Children and other people who are exposed more often to tick vectors are most frequently affected. How is Rocky Mountain Spotted Fever spread? Rocky Mountain Spotted Fever is spread through the bite of an infected tick. Several ticks are responsible for the spread of this disease, and these vary by geographic region. The dog tick, Dermacentor variabilis , is the most common reservoir for this organism in Nebraska. The organism becomes infectious after the tick has been attached to the skin for at least four to six hours. It can also be transmitted in the process of tick removal if the tick becomes crushed, allowing infectious material to escape. Rocky Mountain Spotted Fever is not directly transmitted from person to person.

32. Rocky Mountain Spotted Fever rocky mountain spotted fever (tickborne typhus fever). Direct specific questionsto your medical provider.). What is rocky mountain spotted fever? http://www.state.sd.us/doh/Pubs/rocky.htm

South Dakota Department of Health - Office of Disease Prevention - 605-773-3737 (1-800-592-1861 in South Dakota only) ROCKY MOUNTAIN SPOTTED FEVER (tick-borne typhus fever) (This material is provided for informational purposes only and is not a substitute for medical care. Direct specific questions to your medical provider.) What is Rocky Mountain spotted fever? Rocky mountain spotted fever (RMSF) is a disease caused by a rickettsial organism transmitted to humans by the bite of an infected American dog tick, Dermacentor variabilis, and frequently by other tick species. Who gets RMSF? In the eastern United States, children are infected most frequently, while in the western United States, disease incidence is highest among adult males. Disease incidence is directly related to the exposure to tick-infested habitats or to infested pets. How is RMSF spread? RMSF is spread by the bite of an infected tick (the American dog tick, the lone-star tick or the wood tick), or by contamination of the skin with tick blood or feces. Person to person spread of RMSF does not occur. What are the symptoms of RMSF?

33. An Alternative Medicine Network rocky mountain spotted fever (tickborne typhus fever). What is rockymountain spotted fever? rocky mountain spotted fever (RMSF) is http://www.herbsmed.com/medlib/44.htm

HerbsMed.com Training Training Software Consulting Exams Online Online University An Alternative Medicine Network News Herbs Acupuncture Clinics ... Consult specialists Common Illness Amebiasis Anthrax Arboviral Infections Babesiosis ... DEHYDRATION Rocky Mountain Spotted Fever (tick-borne typhus fever) What is rocky mountain spotted fever? Rocky mountain spotted fever (RMSF) is a disease caused by a rickettsial organism transmitted to humans by the bite of an infected American dog tick, Dermacentor variabilis, and frequently by other tick species. Fewer than 50 cases are reported annually in New York State. Who gets RMSF? In the eastern United States, children are infected most frequently, while in the western United States, disease incidence is highest among adult males. Disease incidence is directly related to the exposure to tick-infested habitats or to infested pets. How is RMSF spread? RMSF is spread by the bite of an infected tick (the American dog tick, the lone-star tick or the wood tick), or by contamination of the skin with tick blood or feces. Person to person spread of RMSF does not occur. What are the symptoms of RMSF?

34. FamilyFun: Health Encyclopedia: Rocky Mountain Spotted Fever (RMSF) An excerpt on rocky mountain spotted fever (RMSF) from the Disney Encyclopediaof Baby and Child Care. rocky mountain spotted fever (RMSF), http://familyfun.go.com/raisingkids/child/health/childhealth/dony89enc_rock/dony

Search FamilyFun shortcuts Parenting Tools Field Guide to Parenting Parent Problem Solver Pregnancy Calendar Baby Name Finder ... Article Library Parenting Checklists Immunizations Nursery Planner Holidays All Checklists Parenting Experts Jan Faull, Child Development Dominic Cappello, Learning All Experts parent ... to parent Get tips, support Parenting Boards Expecting Potty Training Sleep Stay-at-Home Moms ... E-Cards Creative. Fun. Free. Catching up is easy to do. Send an E-Card ROCKY MOUNTAIN SPOTTED FEVER (RMSF) This acute, infectious disease is transmitted by ticks. The distinguishing feature is a characteristic rash. With early treatment, most children recover fully and develop permanent immunity. Untreated, however, the disease can be severe. Early medical intervention is thus essential. As the name implies, the disease causes a spotted rash and was first identified in the Rocky Mountain region. Now, more than half the annual cases occur in the Southeastern United States. Children from five to nine years of age are most frequently infected. Although the infected ticks are primarily encountered in the woods, they can also be found in suburban areas and occasionally urban areas. In almost half of reported cases, the tick bite was unnoticed. WHAT CAUSES ROCKY MOUNTAIN SPOTTED FEVER?

35. Your Health Rocky Mountain Spotted Fever YOUR HEALTH rocky mountain spotted fever (RMSF) It is spread to humansby ticks. How can I catch rocky mountain spotted fever? http://www.calgaryhealthregion.ca/hlthconn/items/rmsf.htm

'Your Health' Home 'Your Health' Topics About This Site Dictionary ... Links YOUR HEALTH: Rocky Mountain Spotted Fever (RMSF) Rocky Mountain Spotted Fever (RMSF) is a relatively rare disease that is caused by an organism called Rickettsia rickettsii. It is spread to humans by ticks. How can I catch Rocky Mountain Spotted Fever? You don't have to live in the 'Rockies' to get the RMSF it has been known to occur throughout North and South America. Few cases of RMSF are reported from the Canadian Rocky Mountain region, however. Most of the reported cases of RMSF in North America are from the south Atlantic and western south-central region of the United States. People who own dogs or who work or play outdoors in tick-infested areas have the highest risk of becoming infected. Most cases of RMSF occur in the spring and summer months. You can get RMSF when a tick infected with Rickettsia rickettsii bites you. Rickettsia rickettsii can be passed from a mother tick to her offspring or picked up by an adult tick when it bites dogs or small animals that have the disease. Ticks usually hang onto grass or brush. They can get onto a person's legs or clothing and then crawl upward looking for a place on the body to attach themselves and feed (on blood).

36. News Release: Health Officials Issue Area Rocky Mountain Spotted Fever Alert Health Officials Issue Area rocky mountain spotted fever Alert. We don't wantpeople thinking all tick bites will cause rocky mountain spotted fever. http://www.tdh.state.tx.us/news/b_new289.htm

TDH News Release August 3, 1999 Health Officials Issue Area Rocky Mountain Spotted Fever Alert Public health officials are alerting residents of Cooke, Grayson and surrounding counties to take precautions against tick bites following recent confirmation of three Rocky Mountain spotted fever cases. A Grayson County man died and two residents of Cooke County had neurological complications after contracting Rocky Mountain spotted fever Symptoms usually begin 3 to 14 days after a bite by an infected tick. Symptoms of Rocky Mountain spotted fever include moderate to high fever, severe headache, nausea or vomiting and muscle pain. In approximately 85 percent of cases, a rash appears about three days after onset of illness. People experiencing any of these symptoms within two weeks of a possible tick bite should see a doctor immediately. "We don't want people thinking all tick bites will cause Rocky Mountain spotted fever. The illness is rare, and few ticks carry it," said Jan Buck, with the Texas Department of Health's Zoonosis Control Program. "But we think it's important for people to know the symptoms and how to reduce the risk of infection." Rocky Mountain spotted fever can be cured with specific antibiotics if treated early. Health officials, however, say the best way to prevent the illness is to avoid ticks by staying out of woods, fields and other areas where ticks are found. If this is not possible, the following precautions are suggested:

37. ROCKY MOUNTAIN SPOTTED FEVER rocky mountain spotted fever. What is rocky mountain spotted fever? Mostcases of rocky mountain spotted fever occur from April to September. http://www.uncc.edu/health_svcs/rockymtfever.htm

ROCKY MOUNTAIN SPOTTED FEVER What is Rocky Mountain Spotted Fever? Rocky Mountain Spotted Fever is an illness with a characteristic rash that results from the bite of an infected tick. The wood tick in the West, the dog tick in the East, and the Lone Star tick in the Southwest are all potential carriers of the disease. The tick must attach and feed on blood for approximately 4-6 hours to cause infection in humans. Person to person spread of this illness does not occur. Most cases of Rocky Mountain Spotted Fever occur from April to September. What are the symptoms of Rocky Mountain Spotted Fever? Typically, there is sudden onset of moderate to high fever, nausea, vomiting, headache, body aches, and chills. Within a few days of illness a rash begins on arms and legs, particularly around wrists, palms, soles, and ankles, and quickly spreads to trunk, neck and face. Symptoms usually appear within two weeks of the bite of an infected tick. The illness can last several weeks and become severe if not treated promptly. Death is uncommon when diagnosis and treatment are prompt. Rocky Mountain Spotted Fever can be treated with antibiotics such as doxycycline or chloramphenicol. Antibiotic treatment is more successful if the illness is treated within the first week of symptoms. How do you prevent Rocky Mountain Spotted Fever?

38. Medic-Planet Rocky Mountain Spotted Fever rocky mountain spotted fever See also Bacteria and disease, Coughs, Ehrlichiosis(HGE), Fever, Gangrene, Heart failure, Lyme disease, Measles (rubeola http://www.medic-planet.com/MP_article/internal_reference/Rocky_Mountain_spotted

39. Prevention Of Vector-borne Infection rocky mountain spotted fever Rickettsia rickettsii. Book, Home Page. http://www.fpnotebook.com/ID171.htm

Home About Links Index ... Editor's Choice Paid Advertisement (click above). Please see the privacy statement Infectious Disease Prevention Vector Prevention of Vector-borne Infection Assorted Pages Bloodborne Pathogen Exposure Prevention of Vector-borne Infection Prevention of Mosquito Bite Vector-borne Disease Prevention Prevention of Tick-borne Infection Book Home Page Cardiovascular Medicine Dental Dermatology Emergency Medicine Endocrinology Gastroenterology General Medicine Geriatric Medicine Gynecology Hematology and Oncology HIV Infectious Disease Jokes Laboratory Neonatology Nephrology Neurology Obstetrics Ophthalmology Orthopedics Otolaryngology Pediatrics Pharmacology Prevention Psychiatry Pulmonology Radiology Rheumatology Sports Medicine Surgery Urology Chapter Infectious Disease Index Bacteria Dermatology Emerging Examination Ophthalmology Fever Fungus Gastroenterology Helminth Immunization Laboratory General Neurology Obstetrics Parasite Pediatrics Pharmacology Prevention Prion Procedure Rheumatology Sexually Transmitted Disease Surgery Travel Medicine Vector Virus Page Prevention Index Needlestick Vector See Also Mosquito Bite Vector Borne Disease General Preventive measures Insect Repellant DEET to skin Permethrin to clothes Perform tick checks daily after outdoor activity Prompt Tick Removal may prevent disease transmission Sleep in netted or screened area Minimize exposed skin surface after dark Avoid swimming or wading in fresh water Bath and wash hair more than twice weekly Discourage lice and fleas Avoid host animals: cats, dogs, mice, cattle

40. Rocky Mountain Spotted Fever rocky mountain spotted fever is a potentially fatal disease caused by a bacteriaspread by ticks. rocky mountain spotted fever. Ticks Make You Sick? http://dermatology.about.com/library/weekly/aa042602a.htm

zfp=-1 About Dermatology Search in this topic on About on the Web in Products Web Hosting Dermatology with Heather Fewell Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Do I Need a Dermatologist? Help, I have a rash! Glossary ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Rocky Mountain Spotted Fever Ticks Make You Sick? From Other Guides How to Prevent Tick-Borne Illnesses Taking the Bite out of Fleas and Ticks Safety First - Tick, Tick, Tick Elsewhere on the Web From the CDC RMSF on Bug Bytes From KidsHealth for Parents Rocky Mountain Spotted Fever (RMSF) is a potentially fatal disease that actually occurs most often in Oklahoma and the South Atlantic states, although it has been found in most states. It is caused by an infection with the bacteria Rickettsia rickettsii. The bacteria is transmitted to humans by three different types of ticks: Eastern United States - Dermacentor variabilis (American dog tick) West South Central States - Amblyomma americanum (Lone Star tick) Western States - Dermacentor andersoni (wood tick) Rocky Mountain Spotted Fever Basic Facts After an infected tick bites a human, the bacteria are released into the bloodstream. There they attack cells that line the blood vessels and smooth muscles that control the constriction of the blood vessel. They set off an immune reaction in the blood vessel causing the vessel to swell and become leaky. This process can occur in any organ system in the body causing a wide variety of symptoms.

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