21. THE MERCK MANUAL, Sec. 13, Ch. 159, Rickettsial Diseases rocky mountain spotted fever (Spotted Fever; Tick Fever; Tick Typhus) rocky mountain spotted fever (RMSF) is limited to the Western Hemisphere. http://www.merck.com/mrkshared/mmanual/section13/chapter159/159e.jsp

22. THE MERCK MANUAL--SECOND HOME EDITION, Rocky Mountain Spotted Fever In Ch. 195, rocky mountain spotted fever (spotted fever, tick fever, tick typhus) is a rickettsial rocky mountain spotted fever (RMSF) is caused by the bacterium http://www.merck.com/mmhe/sec17/ch195/ch195b.html

var externalLinkWarning = "The link you have selected will take you to a site outside Merck and The Merck Manuals.*n*nThe Merck Manuals do not review or control the content of any non-Merck site. The Merck Manuals do not endorse and are not responsible for the accuracy, content, practices, or standards of any non-Merck sources."; Search The Second Home Edition , Online Version Search Index A B C D ... Z Sections Accidents and Injuries Blood Disorders Bone, Joint, and Muscle Disorders Brain, Spinal Cord, and Nerve Disorders ... Women's Health Issues Resources Anatomical Drawings Multimedia Pronunciations Weights and Measures ... , Online Version Section Infections Chapter Rickettsial and Ehrlichial Infections Topics Introduction Ehrlichioses Rocky Mountain Spotted Fever Rocky Mountain Spotted Fever Buy The Book Print This Topic Email This Topic Pronunciations chloramphenicol petechiae pneumonia pneumonitis ... rickettsial Rocky Mountain spotted fever (spotted fever, tick fever, tick typhus) is a rickettsial disease that is transmitted by dog ticks and wood ticks and causes a rash, headache, and high fever. Rocky Mountain spotted fever (RMSF) is caused by the bacterium Rickettsia rickettsii Ticks acquire rickettsiae by feeding on infected mammals. Infected female ticks can also transmit rickettsiae to their offspring. Rickettsial disease is not transmitted directly from person to person.

23. Hardin MD : Rocky Mountain Spotted Fever From the University of Iowa, the *best* lists of Internet sources in Rocky MountainSpotted Fever. http://www.lib.uiowa.edu/hardin/md/rockyfever.html

Rocky Mountain Spotted Fever A service of the University of Iowa Site Map Diseases Home ... Diseases Search Hardin MD See also: Home Insect Bites Lyme Disease Med Pictures Popular Women's Health Dermatology Nursing Pharm Infect Disease Brown Recluse Spiders +Pictures Bubonic Plague +Pictures Chiggers +Pictures Child Skin Rashes +Pictures Flea Bites +Pictures Infectious Diseases Insect Bites Pictures Lyme Disease ... Rocky Mountain Spotted Fever Symptoms Yahoo : Rocky mountain spotted fever Open Directory Project : Health : ... Infectious diseases : .... : Rocky mountain spotted fever (Other versions: Google Karolinska : Rocky mountain spotted fever Medical Library, Karolinska Institute, Sweden Rocky Mountain Spotted Fever Pictures Rocky mountain spotted fever (For pictures, click Program Contents links on right) Division of Vector-Borne Infectious Diseases, US Center for Disease Control (CDC) Rocky mountain spotted fever DermAtlas (Dermatology Image Atlas), Johns Hopkins Univ Rocky Mountain Spotted Fever pictures from CDC Hardin MD, Univ of Iowa

24. Hardin MD : Rocky Mountain Spotted Fever Pictures From CDC From the University of Iowa s Hardin MD CDC, Pictures of Rocky Mountain SpottedFever. http://www.lib.uiowa.edu/hardin/md/cdc/rockyfever.html

Rocky Mountain Spotted Fever Pictures from CDC Return to Hardin MD ( Many more pictures Rocky Mountain Spotted Fever Ticks Medical Pictures from CDC Child's Face ... Tick: Scanning EM 6 To do the search that retrieves these pictures, go to PHIL rocky mountain spotted fever . The pictures above are a good representation of the of the rocky mountain spotted fever pictures in PHIL. The text information with each picture is the same as in CDC/PHIL; the CDC database also provides a link to a high-resolution publication-quality version for each picture (very large files). 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/cdc/rockyfever.html Last updated Friday, Jun 24, 2005 [rocky mountain spotted fever rash, skin rash, pictures of tick bites, pictures ticks, rocky mountain spotted fever photo, picture of rocky mountain fever, rocky mountain spotted fever symtoms, rocky mountain spotted fever symptons, rocky mountain spoted fever, rocky mountian spotted fever, rocky mountain fever] [3691

25. Communicable Disease Fact Sheet rocky mountain spotted fever (RMSF) is a tickborne disease caused by a RMSF is characterized by a sudden onset of moderate to high fever (which can http://www.health.state.ny.us/nysdoh/communicable_diseases/en/rocky.htm

skip to main content New York State Governor Pataki map-NY ... Department of Health Information for a Healthy New York Home Contact Help A-Z Index Search Search this site: Site Contents Health Insurance Programs Employment Opportunities Forms Grants/Funding Opportunities ... Related Sites You are Here: Home Page Communicable Disease Rocky Mountain Spotted Fever Rocky Mountain Spotted Fever (tick-borne typhus fever) What is Rocky Mountain spotted fever? Rocky Mountain spotted fever (RMSF) is a tick-borne disease caused by a rickettsia (a microbe that differs somewhat from bacteria and virus). 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 exposure to tick-infested habitats or to infested pets. Most of the cases in New York State have occurred on Long Island. How is RMSF transmitted? RMSF is spread by the bite of an infected tick. In New York, the American dog tick (dermacentar variablis) is the most common vector. It can also be transmitted 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?

26. Introduction: Rocky Mountain Spotted Fever - WrongDiagnosis.com Introduction to rocky mountain spotted fever as a medical condition includingsymptoms, diagnosis, misdiagnosis, treatment, prevention, and prognosis. http://www.wrongdiagnosis.com/r/rocky_mountain_spotted_fever/intro.htm

Home Symptoms Diseases Risks ... Diseases Search our medical database Subscribe to our free Newsletter sample Send this page to a friend Condition Lists By Organ By Symptom By Class By Prevalence ... List A-Z Current chapter: Rocky Mountain spotted fever Next sections Basic Summary for Rocky Mountain spotted fever Prevalence and Incidence of Rocky Mountain spotted fever Prognosis of Rocky Mountain spotted fever Causes of Rocky Mountain spotted fever ... Risk Factors for Rocky Mountain spotted fever Next chapters: Scrub typhus Queensland tick typhus Tick-borne diseases Pinworm ... Feedback Introduction: Rocky Mountain spotted fever Rocky Mountain spotted fever: A form of typhus spread by ticks. Rocky Mountain spotted fever: Rocky Mountain spotted fever is the most severe and most frequently reported rickettsial illness in the United States. The disease is caused by Rickettsia rickettsii , a species of bacteria that is spread to humans by ixodid (hard) ticks. Initial signs and symptoms of the disease include sudden onset of fever, headache, and muscle pain, followed by development of rash. The disease can be difficult to diagnose in the early stages, and without prompt and appropriate treatment it can be fatal. Researching symptoms of Rocky Mountain spotted fever: Further information about the symptoms of Rocky Mountain spotted fever is available including a list of symptoms of Rocky Mountain spotted fever , other diseases that might have similar symptoms in differential diagnosis of Rocky Mountain spotted fever , or alternatively return to research other symptoms in the

27. Symptoms Of Rocky Mountain Spotted Fever - WrongDiagnosis.com Symptoms of rocky mountain spotted fever including signs, symptoms, incubationperiod, duration, and correct diagnosis. http://www.wrongdiagnosis.com/r/rocky_mountain_spotted_fever/symptoms.htm

Home Symptoms Diseases Risks ... Rocky Mountain spotted fever Search our medical database Subscribe to our free Newsletter sample Send this page to a friend Condition Lists By Organ By Symptom By Class By Prevalence ... List A-Z Current chapter: Rocky Mountain spotted fever Next sections Diagnostic Tests for Rocky Mountain spotted fever Complications of Rocky Mountain spotted fever Misdiagnosis of Rocky Mountain spotted fever Misdiagnosis of Underlying Causes of Rocky Mountain spotted fever ... Treatments for Rocky Mountain spotted fever Next chapters: Scrub typhus Queensland tick typhus Tick-borne diseases Pinworm ... Feedback Symptoms of Rocky Mountain spotted fever General information about symptoms of Rocky Mountain spotted fever: The symptom information on this page attempts to provide a list of some possible symptoms of Rocky Mountain spotted fever. This symptom information has been gathered from various sources, may not be fully accurate, and may not be the full list of symptoms of Rocky Mountain spotted fever. Furthermore, symptoms of Rocky Mountain spotted fever may vary on an individual basis for each patient. Only your doctor can provide adequate diagnosis of symptoms and whether they are indeed symptoms of Rocky Mountain spotted fever. List of symptoms of Rocky Mountain spotted fever: The list of symptoms mentioned in various sources for Rocky Mountain spotted fever includes: Early symptoms: Sudden onset Fever Headache Nausea Vomiting ... Chills Later symptoms: Rash Abdominal pain Joint pain Diarrhea ... Coma Rash symptom details:

28. InteliHealth: Rocky Mountain Spotted Fever InteliHealth Featuring Harvard Medical School s consumer health information.For more than 550 diseases and conditions, learn What Is It?, Symptoms, http://www.intelihealth.com/IH/ihtIH/WSIHW000/9339/20756.html

chrome_imgPreload('gifChr_mid_but_home_mo_1','http://img.intelihealth.com/i/C/Chr_mid_but_home-o.gif'); chrome_imgPreload('gifChr_mid_but_comm_mo_2','http://img.intelihealth.com/i/C/Chr_mid_but_comm-o.gif'); chrome_imgPreload('gifChr_mid_but_dental_mo_3','http://img.intelihealth.com/i/C/Chr_mid_but_dental-o.gif'); chrome_imgPreload('gifChr_mid_but_drug_mo_4','http://img.intelihealth.com/i/C/Chr_mid_but_drug-o.gif'); chrome_imgPreload('gifChr_mid_but_askexpert_mo_5','http://img.intelihealth.com/i/C/Chr_mid_but_askexpert-o.gif'); chrome_imgPreload('gifChr_mid_but_medical_mo_6','http://img.intelihealth.com/i/C/Chr_mid_but_medical-o.gif'); chrome_imgPreload('gifChr_mid_but_chats_mo_7','http://img.intelihealth.com/i/C/Chr_mid_but_chats-o.gif'); chrome_imgPreload('gifchr_mid_but_news_mo_8','http://img.intelihealth.com/i/c/chr_mid_but_news-o.gif'); chrome_imgPreload('gifChr_mid_but_privacy_mo_9','http://img.intelihealth.com/i/C/Chr_mid_but_privacy-o.gif'); Advertisement Rocky Mountain Spotted Fever What Is It? Symptoms Diagnosis Expected Duration ... Additional Info What Is It? Rocky Mountain spotted fever is a severe tick-borne illness that produces high fever, rash, headache and bleeding problems. It is caused by tiny bacteria called

29. ► Rocky Mountain Spotted Fever A medical encycopedia article on the topic rocky mountain spotted fever. http://www.umm.edu/ency/article/000654.htm

var MenuLinkedBy='AllWebMenus [2]', awmBN='530'; awmAltUrl=''; Disease Nutrition Surgery Symptoms Injury ... Encyclopedia (English) Toggle English Spanish Rocky Mountain spotted fever Overview Symptoms Treatment Prevention Definition: An infectious disease caused by Rickettsia rickettsii transmitted to humans by the bite of ticks Alternative Names: Spotted fever Causes, incidence, and risk factors: In the western U.S., the causative agent R rickettsii is transmitted by the wood tick , and in the eastern U.S., by the dog tick. Other ticks transmit the infection in the southern U.S. and in Central and South America. Contrary to the name "Rocky Mountain" most recent cases have been reported in the eastern United States: North and South Carolina, Virginia, Maryland, Georgia, Tennessee, and Oklahoma. Most cases occur in the spring and summer with about 1,000 cases reported per year. Most of the reported cases have been in children. The risk factors include recent hiking or exposure to ticks in an endemic area.

30. Outdoor Health - Rocky Mountain Spotted Fever Outdoor Safety and Health information rocky mountain spotted fever. http://www.umm.edu/outdoor/rocky_mtn_fever.htm

var MenuLinkedBy='AllWebMenus [2]', awmBN='530'; awmAltUrl=''; Home Medical Reference Outdoor Health / Safety Rocky Mountain Spotted Fever Rocky Mountain spotted fever is caused by Rickettsia rickettii, a tick-borne parasite. The disease is most commonly noted in late spring and early summer, when people are more likely to be outside and become hosts for the dog tick (Dermacentor variabilis) or western wood tick (D. andersoni). Other ticks can also carry the parasite. Most infections are reported in the southeastern states: North Carolina, South Carolina, Texas, Tennessee, Virginia, Maryland, and Georgia. Other symptoms include headache (common), chills, joint and muscle aching, cough, puffy eyelids and face, swollen hands and feet, reddened eyes, abdominal pain, nausea, and vomiting. Severe cases can affect multiple organ systems and cause death. If you suspect that someone is suffering from Rocky Mountain spotted fever, seek a physician's help immediately. Tetracycline (adult dose, 500 milligrams four times a day; pediatric dose, 10 milligrams per kilogram four times a day) or doxycycline (adult dose only, 100 milligrams twice a day) should be given for six days, or continued until the victim is without fever for three days. Although it is generally not recommended that you administer tetracycline to a pregnant woman or to a child less than six years of age, because of the risk of tooth discoloration or abnormal bone development (the latter in a fetus during pregnancy), in a case of suspected Rocky Mountain spotted fever when a physician is not available to administer an alternative antibiotic, tetracycline should be given.

31. Rocky Mountain Spotted Fever The organism that causes rocky mountain spotted fever is transmitted by the biteof an rocky mountain spotted fever (RMSF) is the most severe tickborne http://www.lawestvector.org/rocky_mountain_spotted_fever.htm

Rocky Mountain Spotted Fever How do people get Rocky Mountain spotted fever? The organism that causes Rocky Mountain spotted fever is transmitted by the bite of an infected tick. The American dog tick ( Dermacentor variabilis- photo left ) and Rocky Mountain wood tick Dermacentor andersoni- photo right ) are the primary vectors of Rocky Mountain spotted fever bacteria in the United States. Less commonly, infections may occur following exposure to crushed tick tissues, fluids, or tick feces. What is Rocky Mountain spotted fever? Rocky Mountain spotted fever (RMSF) is the most severe tick-borne rickettsial illness in the United States. This disease is caused by infection with the bacterial organism Rickettsia rickettsii It was first recognized as a disease in the 1890's. This disease is so named because it was discovered in the Rocky Mountains and infected persons had a rash with red-purple-black spots. What are the symptoms of Rocky Mountain spotted fever? Patients infected with R. rickettsii

32. Rocky Mountain Spotted Fever rocky mountain spotted fever (RMSF) is an infection caused by the bite of aninfected tick. It affects about 250 to 1200 people a year in the US and usually http://medicalcenter.osu.edu/patientcare/healthinformation/diseasesandconditions

Skip Navigation home about us referring ... Rocky Mountain Spotted Fever Rocky Mountain Spotted Fever Rocky Mountain Spotted Fever Rocky Mountain Spotted Fever (RMSF) is an infection caused by the bite of an infected tick. It affects about 250 to 1,200 people a year in the US and usually occurs from April until October, but it can occur anytime during the year where weather is warm. The mid-Atlantic and southeastern states are most affected. The disease is spread to humans from contact with the tick; it is not spread from one person to another. What are the symptoms of Rocky Mountain Spotted Fever? The following are the most common symptoms of RMSF. However, each person may experience symptoms differently. Symptoms may include: a non-itchy rash that usually starts on the hands, arms, feet, and legs and occurs seven to 10 days after the bite fever headache decreased appetite chills sore throat stomach ache nausea or vomiting diarrhea body aches sensitivity to light Death has occurred in untreated cases of RMSF. Symptoms of RMSF may resemble other conditions or medical problems. Consult a physician for diagnosis. How is RMSF diagnosed?

33. Rocky Mountain Spotted Fever Detailed information on rocky mountain spotted fever, including symptoms, diagnosis,treatment, and prevention. http://www.healthsystem.virginia.edu/uvahealth/peds_infectious/rmsf.cfm

[ Skip Navigation ] Health System Home For Health Answers Healthcare Professionals ... Advanced Search Health System Search Search for Information People UVa Home Health System News Health System Events (all) Health System Publications ... Making a Gift Topics Adolescent Medicine Allergy/Asthma/Immunology Blood Disorders Burns Cancer Common Injuries/Poison Tips Craniofacial Anomalies Dermatology Diabetes/Endo/Metabolism Eye Care Genitourinary/Kidney High-Risk Newborn High-Risk Pregnancy Infectious Diseases Medical Genetics Mental Health Nervous System Disorders Normal Newborns Oral Health Orthopaedics Pediatric Surgery Respiratory Disorders Terminal Illness in Children Transplantation UVa Health Topics A to Z FIND A DOCTOR Adoption Pediatric Infectious Diseases Pediatric Neuropsychology ... CLINICAL TRIALS Search This Site Rocky Mountain Spotted Fever What is Rocky Mountain Spotted Fever? Rocky Mountain Spotted Fever (RMSF) is an infection caused by the bite of an infected tick. It affects about 250 to 1200 people a year in the US and usually occurs from April until October, but it can occur anytime during the year where weather is warm. The mid-Atlantic and southeastern states are most affected. The disease is spread to humans from contact with the tick; it is not spread from one person to another. What are the symptoms of Rocky Mountain Spotted Fever?

34. Information On Rocky Mountain Spotted Fever  - ADHS Vector Borne and Zoonotic Disease Section. rocky mountain spotted fever. Fatal CaseReports of rocky mountain spotted fever Tick Exposure Prevention Flier http://www.azdhs.gov/phs/oids/vector/rocky_mountain.htm

ADHS Home Page A-Z Index Public Health Services Search ... Office of Infectious Disease Services Home Page Vector Borne and Zoonotic Disease Section Rocky Mountain Spotted Fever  Fatal Case Reports of Rocky Mountain Spotted Fever Tick Exposure Prevention Flier for Public Tick Exposure Prevention Bookmark Additional Information from Centers for Disease Control and Prevention . This page last modified on January 03, 2005 General comments, questions, or concerns: ADHS Webmaster

35. Rocky Mountain Spotted Fever - Minnesota Dept. Of Health rocky mountain spotted fever is extremely rare in Minnesota, Rocky MountainSpotted Fever CDC; Viral and Rickettsial Zoonoses Branch website about Rocky http://www.health.state.mn.us/divs/idepc/diseases/rockymtnfever/

dqmcodebase = "http://www.health.state.mn.us/script/" Tick-Transmitted Diseases Tick-Transmitted Diseases Home Diseases Lyme Disease Human Anaplasmosis ... For Health Professionals More From MDH Infectious Diseases A-Z Infectious Diseases by Category External Links Southern Tick-Associated Rash Illness (STARI) OSHA: Tick-Borne Disease Rocky Mountain Spotted Fever Rocky Mountain spotted fever is extremely rare in Minnesota, but isolated cases have been reported from the southern section of the state. The illness is caused by Rickettsia rickettsii , which is transmitted by the tick species Dermacentor variabilis (wood tick). Signs and symptoms include an abrupt onset of fever, malaise, headache, myalgias, nausea and vomiting, and a rash. The typical rash first appears as macules on the wrists and ankles which then spread to the trunk, face, palms, and soles. Supportive laboratory findings include: thrombocytopenia, increased serum hepatic aminotransferase levels, and hyponatremia. The illness is treated with tetracycline in adults and chloramphenicol in children less than 8 years of age; treatment should be undertaken with the assistance of an infectious disease specialist.

36. Reporting Rocky Mountain Spotted Fever - Minnesota Dept. Of Health How To Report rocky mountain spotted fever. Blue Disease Report Card Rocky MountainSpotted Fever may be reported using the MDH blue card within one http://www.health.state.mn.us/divs/idepc/dtopics/reportable/rockymountain.html

dqmcodebase = "http://www.health.state.mn.us/script/" Reporting an Infectious Disease Reporting Home Basics Diseases Disease Rule More From MDH Infectious Diseases A-Z Infectious Disease Categories Reporting Rocky Mountain Spotted Fever ( Rickettsia spp.) How To Report Rocky Mountain Spotted Fever Blue Disease Report Card Rocky Mountain Spotted Fever may be reported using the MDH "blue card" within one working day. Phone Rocky Mountain Spotted Fever may be reported by phone to 612-676-5414. Who Is Required to Report Rocky Mountain Spotted Fever Persons Required to Report Disease Minnesota Rule, Chapter 4605. Attention: Non-MDH link If you have questions or comments about this page, contact idepcweb@health.state.mn.us or call 612-676-5414 (TTY: 612-676-5653) for the MDH Infectious Disease Epidemiology, Prevention and Control Division MDH HOME ABOUT US LIBRARY ... NORTH STAR MAIN CATEGORIES: Minnesota's Public Health System Comments and Questions Phone Number, Address and Directions

37. Information About Rocky Mountain Spotted Fever This site contains information about rocky mountain spotted fever what is it,treatment options. http://www.mamashealth.com/infect/rocky.asp

Mamashealth.com Home Infectious Stuff Adenovirus Anthrax Avian Flu Battle the Cold ... Yellow Fever Links Email Mama What is Rocky Mountain Spotted Fever? Rocky mountain spotted fever is a bacterial infection that's transmitted to people by tick bites. It is not transferred from person to person. Rocky mountain spotted fever occurs most often during months when ticks are active - usually in spring and summer months, between April and early September. What Causes Rocky Mountain Spotted Fever? Rocky mountain spotted fever is caused by an infection with bacteria that infect humans through tick bites. Usually, the tick needs to be attached to you for several hours to transmit the bacteria. Crushing a tick with your fingers can also transmit the infection to you if tick juices enter your body through a cut or other broken skin on your finger. The bacteria that causes rocky mountain spotted fever is called Rickettsia rickettsii. Symptoms of Rocky Mountain Spotted Fever? There are many symptoms of rocky mountain spotted fever. Initial symptoms initial include: a sudden fever nausea vomiting headache muscle pain loss of appetite Later symptoms include: rash abdominal pain joint pain diarrhea Unfortunately, rocky mountain spotted fever can be difficult to diagnose in the early stages, and without prompt and appropriate treatment it can be fatal.

38. Rocky Mountain Spotted Fever rocky mountain spotted fever is a disease caused by a microorganism transmittedto humans by the bite of an infected tick. 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.

39. Dr. Koop - Rocky Mountain Spotted Fever rocky mountain spotted fever is an infectious disease caused by transmitted tohumans by the bite of a . http://www.drkoop.com/ency/93/000654.html

Home Health Reference Rocky Mountain spotted fever Jul 29, 2005 Search: Dr.Koop MEDLINE Diseases Symptoms Procedures Natural Medicine ... Drug Library Inside DrKoop News Archive Animations Health Videos Health Tools ... Newsletters Rocky Mountain spotted fever Injury Disease Nutrition Poison ... Prevention Rocky Mountain spotted fever Definition: Rocky Mountain spotted fever is an infectious disease caused by Rickettsia rickettsii transmitted to humans by the bite of a tick Alternative Names: Spotted fever Causes, incidence, and risk factors: In the western U.S., the causative agent, R. rickettsii, is transmitted by the wood tick, and in the eastern U.S., by the dog tick. Other ticks transmit the infection in the southern U.S. and in Central and South America. Contrary to the name "Rocky Mountain," most recent cases have been reported in the eastern United States: North and South Carolina, Virginia, Maryland, Georgia, Tennessee, and Oklahoma. Most cases occur in the spring and summer with about 1,000 cases reported per year. Most of the reported cases have been in children. The risk factors include recent hiking or exposure to ticks in an area where the disease is known to occur.

40. VIRGINIA DEPARTMENT OF HEALTH ROCKY MOUNTAIN SPOTTED FEVER FACT SHEET (EPI) rocky mountain spotted fever (RMSF) is a disease caused by a rickettsial organism.It is transmitted to humans by the bite of an infected American dog tick http://www.vdh.state.va.us/epi/rmsff.htm

Rocky Mountain Spotted Fever (tickborne typhus fever) What is Rocky Mountain spotted fever? Rocky mountain spotted fever (RMSF) is a disease caused by a rickettsial organism. It is transmitted to humans by the bite of an infected American dog tick 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, adult males are the most likely to get the disease. The chance of getting RMSF is directly related to 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. It cannot be spread from one person to another. What are the symptoms of RMSF? RMSF is characterized by a sudden onset of moderate to high fever (which can last for 2 or 3 weeks), severe headache, fatigue, deep muscle pain, chills and rash. The rash begins on the legs or arms, may include the soles of the feet or palms of the hands and may spread rapidly to the trunk or rest of the body. How soon do symptoms appear?

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