61. Ehrlichiosis MAIN SEARCH INDEX. ehrlichiosis. Definition. ehrlichiosis is a bacterial infection that is spread by ticks. Symptoms include fever, chills http://www.ehendrick.org/healthy/000463.htm

MAIN SEARCH INDEX Ehrlichiosis Definition Description Causes and symptoms Diagnosis ... Resources Definition Ehrlichiosis is a bacterial infection that is spread by ticks. Symptoms include fever , chills, headache , muscle aches, and tiredness. Description Ehrlichiosis is a tick-borne disease caused by infection with Ehrlichia bacteria. Ticks are small, blood-sucking arachnids. Although some ticks carry disease-causing organisms, most do not. When an animal or person is bitten by a tick that carries bacteria, the bacteria are passed to that person or animal during the tick's feeding process. It is believed that the tick must remain attached to the person or animal for at least 24 hours to spread the infection. There are two forms of ehrlichiosis in the United States; human monocytic ehrlichiosis and human granulocytic ehrlichiosis. Monocytic ehrlichiosis is caused by Ehrlichia chaffeensis , which is spread by the Lone Star tick, Amblyomma americanum . As of early 1998, about 400 cases of monocytic ehrlichiosis had been reported in 30 states, primarily in the southeastern and south central United States. The bacteria that causes granulocytic ehrlichiosis is not known, but suspected to be either Ehrlichia equi or Ehrlichia phagocytophila . Granulocytic ehrlichiosis is probably spread by the blacklegged tick Ixodes scapularis (which also spreads Lyme disease ). About 100 cases of granulocytic ehrlichiosis have been reported in Connecticut, Massachusetts, Rhode Island, Minnesota, New York, and Wisconsin.

62. Tick Borne Diseases - Ehrlichiosis (HGE And HME) ehrlichiosis consists of two major diseases in the US human population. Human granulocytic ehrlichiosis (HGE) and human monocytic ehrlichiosis (HME). http://www.stopticks.org/ticks/ehrlichiosis.asp

Stop Ticks On People A Coalition in Partnership with United Way of Dutchess County Email Newsletter Home About STOP Epidemiology Resources ... Prevention Ticks Deer Tick Western Black-legged American Dog Tick Lone Star Tick ... Rocky Mtn Wood Tick Tick-borne Diseases Lyme Disease Babesiosis Ehrlichiosis Colorado Tick Fever ... Support STOP Ehrlichiosis Ehrlichiosis describes several tick-borne bacterial infections originally known to only affect dogs and livestock in the United States, although human disease has been reported in the Far East since the 1950s. Since the mid-1980s, however, bacteria of the genus Ehrlichia have increasingly infected humans in the United States. In June 1999, the Centers for Disease Control and Prevention began listing ehrlichiosis as a reportable disease ( see surveillance criteria ); 302 cases were reported in 1999. Ehrlichia bacteria live inside the cells of infected individuals and cause two major diseases in the U.S. human population. Human granulocytic ehrlichiosis (HGE) occurs when the bacteria infect granulocytes, specific cells involved in immune responses and allergies. Human monocytic ehrlichiosis (HME) occurs when a different Ehrlichia species infects macrophages, another type of immune cell. HGE and HME differ, but their symptoms overlap. Both often cause fever, headaches, and aches and pains, but a rash is not as common as with Rocky Mountain spotted fever or Lyme disease. HGE and HME can be treated with antibiotics if the infection is detected early. No vaccine is available.

63. Ehrlichiosis - Medical Dictionary Definitions Of Popular Medical Terms ehrlichiosis An acute (abrupt onset) disease, first reported in humans in 1986, due to infection by the rickettsial agent, Ehrlichia canis. http://www.medterms.com/script/main/art.asp?articlekey=3202

64. VetCentric - Ehrlichiosis, Ehrlichia - C Dogs get ehrlichiosis from the brown dog tick, which passes an Ehrlichia organism into the bloodstream when it bites. There are http://www.vetcentric.com/reference/encycEntry.cfm?ENTRY=6&COLLECTION=EncycIllne

65. Ehrlichiosis ehrlichiosis. DESCRIPTION A lifethreatening disease, transmitted by ticks, occurring as two distinct clinical entities HME (Human http://www.5mcc.com/Assets/SUMMARY/TP1084.html

Ehrlichiosis DESCRIPTION: A life-threatening disease, transmitted by ticks, occurring as two distinct clinical entities: HME (Human Monocytic Ehrlichiosis) and HGE (Human Granulocytic Ehrlichiosis). HME occurs primarily in the south-central, southeastern, and mid-Atlantic regions in the U.S. and in Europe and Africa and is transmitted by the Lone Star tick (Amblyomma americanum), while HGE occurs in the upper midwest and northeastern states and is transmitted by ticks of the genus Ixodes. Patients present 1-3 weeks after tick bite with fever, headache, myalgia and other non-specific complaints. Treatment should begin if tick bite is suspected and especially if leukopenia and thrombocytopenia are found. Serologic confirmation is possible during convalescence if antibodies to E. chaffeensis are found. CAUSES: Ehrlichia chaffeensis (HME) Ehrlichia equi-like organism (HGE) Synonyms: ICD-9-CM: 082.8 Other specified tick-borne rickettsioses (Lone star fever) Author(s): Mark R. Dambro, MD

66. Canine Ehrlichiosis Canine ehrlichiosis VetCentric.com. Clinical Name ehrlichiosis, Ehrlichia. Overview. There are three stages of ehrlichiosis, each varying in severity. http://www.workingdogs.com/doc0045.htm

Canine Ehrlichiosis VetCentric.com Clinical Name: Ehrlichiosis, Ehrlichia Overview Dogs get ehrlichiosis from the brown dog tick, which passes an Ehrlichia Ehrlichia organism, the third and most serious stage of infection, the chronic phase, will commence. Lameness, neurological and ophthalmic disorders, kidney disease, and anemia and other blood disorders can result. Chronic ehrlichiosis can be fatal. Antibiotics, administered for an extended period of time, are effective at eliminating the infection. Dogs with severe cases of chronic ehrlichiosis cannot be cured, but supportive care and treatment of diseases secondary to the infection, such as anemia, can help stabilize the dog. Clinical Signs and Symptoms The acute stage of the disease, occurring most often in the spring and summer, begins one to three weeks after infection and lasts for two to four weeks. Clinical signs include a fever, petechiae, bleeding disorders, and vasculitis. There are no outward signs of the subclinical phase, which can last for up to five years. Clinical signs of the chronic phase include pale gums due to anemia, thrombocytopenia, vasculitis, lymphadenopathy, respiratory dyspnea, coughing, polyuria, polydipsia, lameness, ophthalmic diseases such as retinal hemorrhage and anterior uveitis, and neurological disease. Diagnosis Diagnosis is achieved most commonly by serologic testing of the blood for the presence of antibodies against the Ehrlichia organism. During the acute phase of infection, however, the test can be falsely negative because the body will not have had time to make antibodies to the infection. Thus, the test will need to be repeated if the first result is negative. In addition, blood tests will show abnormalities in the numbers of red cells, white cells, and platelets. Uncommonly, a diagnosis can be made by looking under a microscope at a blood smear for the presence of the

67. Ehrlichiosis - Vermont Department Of Health What is ehrlichiosis? ehrlichiosis is a tickborne disease of humans and animals caused by bacteria named Ehrlichia (airLICK-ee-ah). Who gets ehrlichiosis? http://www.healthyvermonters.info/hs/epi/idepi/ehrlich/ehrlichiosis.shtml

A Fact Sheet on Ehrlichiosis Contents: What is ehrlichiosis? Who gets ehrlichiosis? How is ehrlichiosis spread? What are the symptoms of ehrlichiosis? ... What is the best way to remove a tick? What is ehrlichiosis? Ehrlichiosis is a tickborne disease of humans and animals caused by bacteria named Ehrlichia (air-LICK-ee-ah). The bacteria are transmitted by ticks, and can infect two different types of white blood cells. In the United States, ehrlichiosis is mainly found in the southeastern and south central regions of the country, although it has been known to occur in certain northern states as well. RETURN TO CONTENTS Who gets ehrlichiosis? Anyone can get ehrlichiosis, but the majority of known cases have been in adults. People who spend long amounts of time outdoors are more likely to have exposure to infected ticks. Most cases occur between the months of April and October. RETURN TO CONTENTS How is ehrlichiosis spread? The bacteria are transmitted to humans by the bite of an infected tick, including the deer tick, the dog tick, and the Lone Star tick. Ehrlichiosis cannot be spread from person to person or by direct contact with an infected animal. RETURN TO CONTENTS What are the symptoms of ehrlichiosis?

68. Ehrlichiosis ehrlichiosis. Definition ehrlichiosis is a bacterial infection that is spread by ticks. Symptoms include fever, chills http://www.chclibrary.org/micromed/00046400.html

Main Search Index Definition Description Causes ... Resources Ehrlichiosis Definition Ehrlichiosis is a bacterial infection that is spread by ticks. Symptoms include fever , chills, headache , muscle aches, and tiredness. Description Ehrlichiosis is a tick-borne disease caused by infection with Ehrlichia bacteria. Ticks are small, blood-sucking arachnids. Although some ticks carry disease-causing organisms, most do not. When an animal or person is bitten by a tick which carries bacteria, the bacteria are passed to that person or animal during the tick's feeding process. It is believed that the tick must remain attached to the person or animal for at least 24 hours to spread the infection. There are two forms of ehrlichiosis in the United States; human monocytic ehrlichiosis and human granulocytic ehrlichiosis. Monocytic ehrlichiosis is caused by Ehrlichia chaffeensis , which is spread by the Lone Star tick, Amblyomma americanum . As of early 1998, about 400 cases of monocytic ehrlichiosis had been reported in 30 states, primarily in the southeastern and south central United States. The bacteria which causes granulocytic ehrlichiosis is not known but suspected to be either Ehrlichia equi or Ehrlichia phagocytophila . Granulocytic ehrlichiosis is probably spread by the blacklegged tick Ixodes scapularis (which also spreads Lyme disease ). About 100 cases of granulocytic ehrlichiosis have been reported in Connecticut, Massachusetts, Rhode Island, Minnesota, New York, and Wisconsin.

69. Ehrlichiosis ehrlichiosis. Information on the disease and its prevention (forwarded to CDC web site). Who can I contact at the Department of Health about ehrlichiosis? http://www.health.ri.gov/disease/communicable/ehrlichiosis.htm

HEALTH Disease Prevention Office of Communicable Diseases 3 Capitol Hill Room 106 Phone: (401) 222-2577 Fax: (401) 222-2488 711 (RI Relay) Contact: LarryR@doh.state.ri.us Communicable Diseases Homepage Alphabetical List of Diseases A-Z Information for the General Public ... Travel Clinics Ehrlichiosis Information on the disease and its prevention (forwarded to CDC web site). What are the Ehrlichiosis rates in Rhode Island? Who can I contact at the Department of Health about Ehrlichiosis Call the Office of Communicable Diseases at 401-222-2577. Ehrlichiosis and Lyme Disease disease prevention asthma cancer ... women's health HEALTH ri Rhode Island Department of Health Division of Disease Prevention and Control healthri search health topics publications ... news

70. Ehrlichiosis Communicable Diseases Homepage. General Information on ehrlichiosis. Alphabetical List of Diseases AZ. Communicable Diseases In Rhode Island. ehrlichiosis. http://www.health.ri.gov/disease/communicable/ehrlichiosis_data.htm

HEALTHri Disease Prevention Office of Communicable Diseases 3 Capitol Hill - Room 106 Providence, RI 02908 fax: (401) 222-2488 email: TomB@doh.state.ri.us Communicable Diseases Homepage General Information on Ehrlichiosis ... Travel Clinics Communicable Diseases In Rhode Island Ehrlichiosis Reported Cases of Disease, 1998-2002 Reported Cases by Age Group, 2002 Reported Cases by Gender, 2002 Reported Cases by County, 2002 ... Reported Cases by Month, 2002 Note: Since the number of cases of Ehrlichiosis is less than 50 for one year, information has been combined for three years to allow demonstration of trends for the following figures: Reported Cases of Ehrlichiosis by Age Group, Rhode Island, 2002 Age Group Number of Reported Cases % of Cases Rate* of Disease per 100,000 People Unknown Total Denominator for computing rates for RI was based on the 2000 population estimates obtained from the U.S. Census Bureau.

71. Ehrlichiosis ehrlichiosis. Human ehrlichiosis. ehrlichiosis is a tickborne disease caused by several bacterial species in the genus Ehrlichia. ehrlichiosis;. http://omni.ac.uk/browse/mesh/C0085399L0086044.html

low graphics Ehrlichiosis other: Lyme Disease Q Fever Rickettsia Infections Rocky Mountain Spotted Fever ... Human ehrlichiosis Ehrlichiosis is a tick-borne disease caused by several bacterial species in the genus Ehrlichia . This resource is made available by the Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, CDC. This site presents an overview of human ehrlichiosis in the United States, and provides information on clinical signs and symptoms, epidemiology, laboratory diagnosis, treatment, and prevention and control measures. There is also a glossary of useful terms, a FAQ section, suggested reading list, and links to other Web resources. Ehrlichiosis Last modified: 27 May 2004

72. Ehrlichiosis Canine Nature of the disease. Canine ehrlichiosis (tropical canine pancytopaenia — TCP) is a tickborne rickettsial disease of dogs caused by Ehrlichia canis. http://www.spc.int/rahs/Manual/Canine-Feline/EHRLICHIAE.HTM

CANINE ERLICHIOSIS Nature of the disease Canine ehrlichiosis (tropical canine pancytopaenia — TCP) is a tick-borne rickettsial disease of dogs caused by Ehrlichia canis Classification SPC List D disease Susceptible species The dog and some species of wild canidae are susceptible. Humans can become infected, but only through a tick bite. The disease cannot be spread directly from dogs to humans. Distribution TCP occurs in tropical and sub-tropical regions. It occurs over most of the range of its tick vector, the common brown dog tick ( Rhipicephalus sanguineus ), in Africa, the Middle East, east Asia, South East Asia, South America, the Caribbean and the USA (southern states and Hawaii). The disease has been suspected in northern Australia, but has not been confirmed. Clinical signs There is a wide range of clinical syndromes both acute and chronic. Carrier states can also exist. Commonly, four stages of disease are recognised Febrile stage Fever Lethargy, anorexia and loss of condition Hind limb oedema in about 50% of cases May be diarrhoea, epistaxis or other haemorrhages

73. HUMAN EHRLICHIOSIS Shamit Sarangi, MSIII. HUMAN ehrlichiosis. OUTLINE ETIOLOGIC AGENTS MICROBIOLOGY EPIDEMIOLOGY PATHOLOGY DIAGNOSIS LABS CLINICAL MANIFESTATIONS http://toddtroost.com/students/sarangi.html

Shamit Sarangi, MSIII HUMAN EHRLICHIOSIS OUTLINE ETIOLOGIC AGENTS MICROBIOLOGY EPIDEMIOLOGY PATHOLOGY ... REFERENCES I. ETIOLOGIC AGENTS Return to Outline A. Human Monocytic Ehrlichiosis: Ehrlichia chaffeensis B. Human Granulocytic Ehrlichiosis: Ehrlichia phagocytophilia equi II. MICROBIOLOGY Return to Outline A. Both etiologic agents are members of the order Rickettsiales , family Rickettsiaceae B. Obligate intracytoplasmic gram negative cocci or coccobacilli and is very pleomorphic. Unlike the gram negatives, these do not contain LPS C. Size ranges from 0.5 to 1.5 m m III. EPIDEMIOLOGY Return to Outline A . Human Monocytic Ehrlichiosis chafeensis 1. vector: a. Amblyomma americanum (deer tick) b. Dermacentor (deer tick) 2. reservoir: a. deer, dogs 3. geographic distribution: a. Southeastern, southcentral, Atlantic coastal, northeastern, Pacific coastal states 4. 1500 documented cases have been reported in the last 10 years.

74. Lyme Disease And Related Tick-Borne Infections - UMMC Home Medical Reference Patient Education WHAT IS ehrlichiosis? Symptoms of ehrlichiosis. ehrlichiosis usually develops rapidly. http://www.umm.edu/patiented/articles/what_ehrlichiosis_000016_9.htm

Home Medical Reference Patient Education WHAT IS EHRLICHIOSIS? Ehrlichiosis refers to several diseases caused by very small organisms called Ehrlichieae that affect both humans and animals. Ehrlichieae are known as gram negative bacteria, which infect and destroy white blood cells. Two human diseases are caused by varieties of Ehrlichieae found in the US. Human monocyte ehrlichiosis (HME) infects white cells known as monocytes. In 1986, HME was the first of the two diseases to be identified in humans. It is caused by the bacterium Ehrlichia chaffeensis and is carried by the Lone-Star tick, found primarily in the south-central and southeastern US. Human granulocytic ehrlichiosis (HGE) infects granulocyte white blood cells. It is more likely than HME to be carried by adult Ixodes ticks and so is most often found northeastern and upper Midwestern states. Both forms have been reported in Europe. In fact, a Swedish study reported an almost equal prevalence of ehrlichiosis and Lyme disease in one population group. HME has also been reported in Africa. In the US, ehrlichiosis is not yet required to be reported to the Centers for Disease Control, so the true incidence of either form (HGE or HME) is unknown. Between 1986 and 1997, however, 1,223 cases were reported to 30 state health departments that routinely collected information on ehrlichiosis (742 HME, 449 HGE, and 32 not ascribed to either disease). Some studies indicate that men in their middle to late years are most likely to be infected with either form of ehrlichiosis.

75. Outdoor Health - Ehrlichiosis Home Medical Reference Outdoor Health / Safety ehrlichiosis. Human ehrlichiosis (there is also a canine form) is present in two http://www.umm.edu/outdoor/ehrlichiosis.htm

Home Medical Reference Outdoor Health / Safety Ehrlichiosis Human ehrlichiosis (there is also a canine form) is present in two forms, one caused by a rickettsial organism known as Ehrlichia chaffeensis , which is spread by Amblyomma americanum tick bites, and the other caused by the rickettsial organisms E. phagocytophila and E. equi , spread by Ixodes tick bites. Infection is usually acquired by a person who inhabits a rural environment. The average incubation period after a bite is approximately seven to 10 days. The victims, who are more commonly middle-aged adults than children and young adults, complain of a flulike syndrome with high fever , chills, fatigue headache muscle aches vomiting , and a variety of skin rashes, which can be punctate, bumpy, like tiny bruises, or broad and reddened. A victim often has decreased counts of various types of blood cells, as well as liver dysfunction. The treatment is tetracycline 500 milligrams four times a day, or doxycycline 100 milligrams twice a day, for 10 days. The few children who have been diagnosed with ehrlichiosis have been treated with doxycycline 3 milligrams per kilogram body weight in two divided doses per day. Untreated or treated after a delay in diagnosis, up to 15% of victims can develop severe infections, kidney failure, bleeding disorders, seizures, and/or coma.

76. CrossDots.com - Searching The WEB ! ScienceDaily Browse Topics Health/Conditions_and_Diseases News about ehrlichiosis It also will allow researchers to determine whether ehrlichiosis may be as widespread as Lyme Disease in the Northeast. full story. http://www.crossdots.info/ehrlichiosis.html

crossdots.info Search the web ! enter your keywords here : Keywords : ehrlichiosis Comprehensive Medical Condition Reports $19.95 Ea www.uscomputer.net "This book has been created for patients who have decided to make education and research an integral part of the treatment process." www.icongrouponline.com Related Searches Claritin Investment Party Laptop Popular Searches (listed in alphabetical order) Adventure Travel Airline Tickets Arts Auction Books Cars Chat Computer Games Computer Hardware Computers Cooking Crafts Credit Cards Cruises Dvd Electronics Entertainment Finance Fitness Flowers Furniture Games Gardening Gift Baskets Gifts Greeting Card Health Health Insurance Hobbies

77. Ehrlichiosis. The Columbia Encyclopedia, Sixth Edition. 2001 2001. ehrlichiosis. (ârl k ´s s) (KEY) , any of several diseases caused by rickettsia of the genus Ehrlichia. ehrlichiosis is transmitted by ticks. http://www.bartleby.com/65/eh/ehrlichi.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia Cultural Literacy World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations Respectfully Quoted English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference Columbia Encyclopedia PREVIOUS NEXT ... BIBLIOGRAPHIC RECORD The Columbia Encyclopedia, Sixth Edition. ehrlichiosis k s) ( KEY ) , any of several diseases caused by rickettsia of the genus

78. KY: CHS: Department For Public Health - Ehrlichiosis ehrlichiosis. What Is ehrlichiosis? How ehrlichiosis Is Spread? Human monocytic ehrlichiosis is spread by the bite of an infected tick. http://chs.ky.gov/publichealth/ehrlichiosis.htm

KY Cabinet for Health Services Department for Public Health Ensuring the Health of Kentucky Public Health Home Page CHS Home Page Search CHS Sites News Releases Product Recalls Food Recalls Vital Records Data Reports Local Health Departments Data Surveys Training Calendar For other Kentucky Government sites visit: 275 East Main Street Frankfort, KY 40621 502-564-3418 or 3261 Ehrlichiosis What Is Ehrlichiosis? Ehrlichiosis is caused by several bacterial species in the genus Ehrlichia that affect humans and animals. Currently there are four ehrlichial species that are known to cause disease in humans. Human monocytic ehrlichiosis (HME) from infection with Ehrlichia chaffeensis is the ehrlichial disease most often reported in Kentucky and other southeastern and midwestern states. Six or fewer confirmed cases per year have been reported in Kentucky since 1991. How Ehrlichiosis Is Spread? Human monocytic ehrlichiosis is spread by the bite of an infected tick. The lone star tick, Amblyomma americanum is the primary vector for HME. Other known vectors of ehrlichiosis in the United States are the blacklegged tick (

79. EHRLICHIOSIS ehrlichiosis. Specialty Definition ehrlichiosis. Domain, Definition. Food Agriculture. Specialty Definition ehrlichiosis. (From Wikipedia, the free Encyclopedia). http://www.websters-online-dictionary.org/definition/english/Eh/Ehrlichiosis.htm

Philip M. Parker, INSEAD. EHRLICHIOSIS Specialty Definition: EHRLICHIOSIS Domain Definition Any disease due to infection with rickettsiae of the genus Ehrlichia, which are trasmitted by ticks. Source: European Union. references Health A tick-borne disease characterized by fever, headache, myalgias, anorexia, and occasionally rash. In humans the disease is caused by Ehrlichia chaffeensis, in dogs it is caused by E. canis, and in horses, E. equi. ( references Source: compiled by the editor from various references ; see credits. Top Specialty Definition: Ehrlichiosis (From Wikipedia , the free Encyclopedia) Human ehrlichiosis is a zoonotic infection in humans transmitted by a variety of tick species. The genus Erlichaea are characterized by small, rounded gram-negative cocci that invade white blood cells. Source: adapted by the editor from Wikipedia , the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article " Ehrlichiosis Top Crosswords: EHRLICHIOSIS Specialty definitions using "EHRLICHIOSIS" Ehrlichia chaffeensis references Top Commercial Usage: EHRLICHIOSIS Domain Title References The Official Patient's Sourcebook on Ehrlichiosis reference (more reference examples) Source: compiled by the editor from various references ; see credits.

80. Human Ehrlichiosis There are two distinct forms of illness recognized human monocytic ehrlichiosis (HME),and human granulocytic ehrlichiosis (HGE). Human ehrlichiosis. http://www.michigan.gov/mda/0,1607,7-125-1566_2403_2421-8620--,00.html

Skip Navigation Michigan.gov Home MDA Home Sitemap ... Brochures Human Ehrlichiosis There are two distinct forms of illness recognized: human monocytic ehrlichiosis (HME), caused by Ehrlichia chaffeensis , and human granulocytic ehrlichiosis (HGE), caused by an agent similar or identical to the veterinary pathogens E. equi and E. phagocytophila. Ehrlichiae are bacteria that primarily invade leukocytes (white blood cells). The bacteria is transmitted to humans through the bite of infected ticks, which acquire the agents after feeding on infected animal reservoirs. Ixodes scapularis and Amblyomma americanum ticks are capable of transmitting this disease in Michigan. Symptoms: Ehrlichiae dividing in white blood cell Fever Headache Malaise and muscle aches. Other signs may include nausea, vomiting, diarrhea, cough, joint pain, confusion, and occasionally, a rash. HGE has not yet been found in Michigan but it has been diagnosed in patients in Wisconsin and Minnesota. Also, HME is occasionally reported in Indiana. Because the vector Ixodes scapularis is found in Michigan and the state’s close proximity to the state of Wisconsin, the emergence of this disease is being closely monitored in Michigan.

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