61. Index Of /library/disease/Viral Hemorrhagic Fevers/Hantavirus Pulmonary Syndrome Parent Directory......Index of /library/disease/Viral hemorrhagic fevers/Hantavirus PulmonarySyndrome. Name Last modified Size http://allsouthwest.com/library/disease/Viral hemorrhagic fevers/Hantavirus Pulm

Index of /library/disease/Viral hemorrhagic fevers/Hantavirus Pulmonary Syndrome Name Last modified Size Description ... Parent Directory 21-Jun-2002 20:30 - Laboratory Managemen..> 21-Jun-2002 20:29 139k read me.txt 21-Jun-2002 20:29 11k

62. Genesis Health System - Detailed Disease Info - Hemorrhagic Fevers hemorrhagic fevers. Definition. Lacy, Mark D., and Raymond A. Smego. Viral HemorrhagicFevers. Advances in Pediatric Infectious Diseases 12 (1997) 21. http://www.genesishealth.com/micromedex/detaileddisease/00050730.aspx

Facility Information DeWitt Comm Hosp Genesis Medical Ctr Illini Hospital Genesis Health Grp VNA Hemorrhagic fevers Definition Hemorrhagic fevers are caused by viruses that exist throughout the world. However, they are most common in tropical areas. Early symptoms, such as muscle aches and fever , can progress to a mild illness or to a more debilitating, potentially fatal disease. In severe cases, a prominent symptom is bleeding, or hemorrhaging, from orifices and internal organs. Description Although hemorrhagic fevers are regarded as emerging diseases, they probably have existed for many years. This designation isn't meant to imply that they are newly developing, but rather that human exposure to the causative viruses is increasing to the point of concern. Hemorrhagic fevers are generally endemic, or linked to specific locations. If many people reside in an endemic area, the number of cases may soar. For example, dengue fever , a type of hemorrhagic fever, affects approximately 100 million people annually. A large percentage of those infected live in densely populated southeast Asia; an area in which the disease vector, a mosquito, thrives. Some hemorrhagic fevers are exceedingly rare, because people very infrequently encounter the virus. Marburg hemorrhagic fever, which has affected fewer than 40 people since its discovery in 1967, provides one such example. Fatality rates are also variable. In cases of dengue hemorrhagic fever-dengue shock The onset of hemorrhagic fevers may be sudden or gradual, but all of them are linked by the potential for hemorrhaging. However, not all cases progress to this very serious symptom. Hemorrhaging may be attributable to the destruction of blood coagulating factors or to increased permeability of body tissues. The severity of bleeding ranges from petechiae, which are pinpoint hemorrhages under the skin surface, to distinct bleeding from body orifices such as the nose or vagina.

63. Travel Medicine - Viral Hemorrhagic Fevers (La Medicina Para El Viajero - Las Fi Translate this page Anuncio de los CDC Sobre la Fiebre del Valle del Rift Se comunicó un gran brotede la fiebre del Valle del Rift a principios de 1998 en Kenia y Somalia. http://www.uuhsc.utah.edu/healthinfo/spanish/Travel/viral.htm

Anuncio de los CDC S obre la Fiebre del Valle del R ift: El uso abundante de repelente contra insectos. Vestir camisas de manga larga y pantalones largos. Las fiebres hemorrágicas virales (su sigla en inglés es VHF) es un término que se refiere a un grupo de enfermedades causadas por varias familias distintas de virus. Aunque algunos tipos de virus de la fiebre hemorrágica causan enfermedades que son relativamente leves, muchos de estos causan enfermedades severas, que ponen en peligro la vida, sin una cura conocida. Quizás el más conocido de este grupo de enfermedades es el virus Ébola, que se hizo famoso por la película "Outbreak". Arenavirus Filovirus Bunivirus Flavivirus Salvo pocas excepciones, no existe cura o tratamiento con medicamentos para estas enfermedades. área diferente. Ocasionalmente, una persona infectada que viaja desde un antes no se han visto estas enfermedades. Fiebre marcada. Fatiga. Mareos. Cansancio. Controlar las poblaciones de roedores.

64. ENIVD-Imported Viral Hemorrhagic Fevers Within The European Union Translate this page Imported Viral hemorrhagic fevers within the European Union case definitions, transmission,clinical symptoms, diagnostics, safety measures, treatment, vaccine http://www0.rki.de/INFEKT/ENIVD/VHFDISEASES/fs_vhfdiseases.htm

65. Hemorrhagic_fever Back to Infectious Diseases or Refugees. Viral hemorrhagic fevers. PrimaryDistribution hemorrhagic fevers (HFs) are found in numerous http://www.baylor.edu/~Charles_Kemp/hemorrhagic_fever.htm

Back to Infectious Diseases or Refugees Viral Hemorrhagic Fevers Primary Distribution : Hemorrhagic fevers (HFs) are found in numerous areas of the world, with variants noted below under vectors and agents. Agents and Vectors : Viruses are transmitted by: Zoonosis or transmission of a disease of animals directly to humans from the animal host (especially rodents in the case of hemorrhagic fevers): HF with renal syndrome secondary to Hantaan virus infection: Europe, East China, and Korea (In Europe includes Puumala virus, Scandinavia; Belgrade virus, Yugoslavia; Dobrava virus, Balkan area. These three tend to cause milder infections); Hantavirus pulmonary syndrome: North America (especially Southern), South America (especially Andes); Junin HF, Argentina; Machupo HF, Bolivia; Lassa HF, West Africa; Ebola and Marburg HFs: Central Africa (vector not known). Tick: Omsk HF: Russia, especially Siberia; Kyasanur Forest hemorrhagic fever: India; Crimean-Congo HF: Africa, Middle East, Eastern Europe, Russia, Western China. Mosquito: Chikungunya HF: Africa and East Asia; dengue fever: worldwide; yellow fever: tropical Africa and South America; Rift Valley fever: Africa, especially Central, Egypt.

66. Ebola Ebola and Marburg hemorrhagic fevers (Note Ebola and Marburg hemorrhagic fevers(HFs) are discussed together because of similarities between them. http://www.baylor.edu/~Charles_Kemp/ebola.htm

Back to Infectious Diseases or Refugees Ebola and Marburg Hemorrhagic Fevers (Note: Ebola and Marburg hemorrhagic fevers (HFs) are discussed together because of similarities between them. Last update 11/2001. Primary Distribution : Ebola: The Congo, Sudan, Ivory Coast, Gabon, and most recently, Uganda in East, Central, and West Africa. Marburg: Uganda and Kenya in West Africa (Centers for Disease Control [CDC], 2000; World Health Organization [WHO], 2000). Agent and Vector : The agents for Ebola and Marburg HFs are virions that are members of the Filoviridae family, which is passed human to human through exposure to body fluids or by other means, including handling equipment touched by infected persons. The virus is also transmitted by handling infected animal (primate) tissue. The animal host is not known. Ebola and Marburg HFs are highly contagious, especially in later stages. The CDC has guidelines for management of patients with suspected viral hemorrhagic fever (Centers for Disease Control [CDC], 1996). Ebola and Marburg HFs are considered by the CDC to be Category A biological warfare (BW) agents (CDC, 2000). See bioterror box below. Incubation : 3-16 days.

67. Bioterrorism Preparedness - Biological Agents BACK Viral hemorrhagic fevers Viral hemorrhagic fevers Fact Sheet CDCViral hemorrhagic fevers Viral hemorrhagic fevers Fact sheets. http://www.idph.state.il.us/Bioterrorism/bioagents_viralfev.htm

Viral hemorrhagic fevers Viral hemorrhagic fevers Fact Sheet CDC: Viral hemorrhagic fevers Viral hemorrhagic fevers Fact sheets

68. Travel Medicine - Viral Hemorrhagic Fevers Viral hemorrhagic fevers. What are viral hemorrhagic fevers? Viral Whatare the natural reservoirs of viral hemorrhagic fevers? For http://www.mccg.org/adulthealth/travel/viral.asp

About MCCG News MCCG Careers Health Careers ... Home You are here Home Adult Health Travel Medicine Inside Adult Health SEARCH Adult Health Adult Health Home Allergy and Asthma Arthritis and Other Rheumatic Diseases Bio-Terrorism Bone Disorders Breast Health Cardiovascular Diseases Dermatology Diabetes Digestive Disorders Ear, Nose, and Throat (Otolaryngology) Endocrinology Environmental Medicine Eye Care Glossary Gynecological Health Hematology and Blood Disorders Home Health, Hospice, and Elder Care Liver, Biliary, and Pancreatic Disorders Infectious Diseases Men's Health Mental Health Disorders Nervous System Disorders Non-Tramatic Emergencies Oral Health Orthopaedic surgery Pathology Pediatrics Plastic Surgery Physicial Medicine and Rehabilitation Pregnancy and Childbirth Prostate Health Radiology Respiratory Disorders Skin Cancer Spine, Pelvic and Shoulder Disorders Surgical Care Travel Medicine Urology Women's Health CDC Announcement A bout Rift Valley F ever: A large outbreak of Rift Valley fever was reported early in 1998 in Kenya and Somalia. A recent outbreak occurred in southwestern Saudi Arabia and Yemen in 2000. The virus is transmitted primarily by infected mosquitoes and other biting insects and occasionally by contact with the blood or body fluids of infected animals. Travelers are advised to take appropriate precautions to prevent infection. This includes:

69. Hemorrhagic Fevers | Principal Health News hemorrhagic fevers. Barrett, Julia. Viral hemorrhagic fevers. Advancesin Pediatric Infectious Diseases 12 (1997) 21. Le Guenno, Bernard. http://www.principalhealthnews.com/topic/topic100586927

About This Site Registration FAQ Contact Us ... Site Awards You are here: Home Health A to Z Hemorrhagic Fevers Hemorrhagic Fevers Barrett, Julia Below: Definition Description Causes and symptoms Diagnosis ... Resources Definition Hemorrhagic fevers are caused by viruses that exist throughout the world. However, they are most common in tropical areas. Early symptoms, such as muscle aches and fever, can progress to a mild illness or to a more debilitating, potentially fatal disease. In severe cases, a prominent symptom is bleeding, or hemorrhaging, from orifices and internal organs. Description Although hemorrhagic fevers are regarded as emerging diseases, they probably have existed for many years. This designation isn't meant to imply that they are newly developing, but rather that human exposure to the causative viruses is increasing to the point of concern. These viruses are maintained in nature in insect, arthropod (insects, spiders and other invertebrates with external hard skeletons), or animal populations-so-called disease reservoirs. Individuals within these populations become infected with a virus but do not die from it. In many cases, they don't even develop symptoms. Then the viruses are transmitted from a reservoir population to humans by vectors-either members of the reservoir population or an intervening species, such as mosquitoes. Hemorrhagic fevers are generally endemic, or linked to specific locations. If many people reside in an endemic area, the number of cases may soar. For example, dengue fever, a type of hemorrhagic fever, affects approximately 100 million people annually. A large percentage of those infected live in densely populated southeast Asia; an area in which the disease vector, a mosquito, thrives. Some hemorrhagic fevers are exceedingly rare, because people very infrequently encounter the virus. Marburg hemorrhagic fever, which has affected fewer than 40 people since its discovery in 1967, provides one such example. Fatality rates are also variable. In cases of dengue hemorrhagic fever-dengue shock syndrome, 1-5% of the victims perish. On the other end of the spectrum is Ebola, an African hemorrhagic fever, that kills 30-90% of those infected.

70. CDC: SPB: Disease Information: What Are VHFs? Disease Information Viral hemorrhagic fevers Fact Sheets Viral HemorrhagicFevers. What are viral hemorrhagic fevers? The term viral http://www.medhelp.org/NIHlib/GF-653.html

Special Pathogens Branch CONTENTS Main Index Disease Information - What Is a VHF? Fact Sheets Arenaviruses Lassa Fever LCM ... Site Index GO TO... CDC Home Page NCID Home Page Disease Information Viral Hemorrhagic Fevers: Fact Sheets Viral Hemorrhagic Fevers What are viral hemorrhagic fevers? The term viral hemorrhagic fever (VHF) refers to a group of illnesses that are caused by several distinct families of viruses. While some types of hemorrhagic fever viruses can cause relatively mild illnesses, many of these viruses cause severe, life-threatening disease. The Special Pathogens Branch (SPB) primarily works with hemorrhagic fever viruses that are classified as biosafety level four (BSL-4) pathogens. A listing of these viruses appears in the SPB fact sheet index. The Division of Vector-Borne Infectious Diseases, also in the National Center for Infectious Diseases, works with the non-BSL-4 viruses that cause two other hemorrhagic fevers, dengue hemorrhagic fever and yellow fever. How are hemorrhagic fever viruses grouped?

71. 1Up Health > Health Links Directory > Conditions And Diseases: Infectious Diseas Conditions and Diseases Infectious Diseases Viral hemorrhagic fevers. Uncover resources and links to Web sites related to Conditions http://www.1uphealth.com/links/viral-hemorrhagic-fevers.html

Home Contact Us Privacy Caring For Your Well Being Alternative Medicine Clinical Trials Health News Poisons ... Health Topics A-Z Search 1Up Health Health Directory Addictions Alternative Animal ... Weight Loss By Demography Child Health Teen Health Men's Health Women's Health ... Viral : Hemorrhagic Fevers Description Categories Dengue Fever Ebola Hantavirus Marburg ... Yellow Fever See Related Categories Health: Public Health and Safety: Epidemiology Science: Biology: Microbiology: Virology Sites Hemorrhagic Fevers Pointers to information about hemorrhagic fevers including Ebola and Dengue Fever NCID: Emerging Infectious Diseases Topics Emerging Infectious Diseases Resource Links Outbreak - Lassa Fever View news articles about the 1997 hemorrhagic fever outbreaks in Sierra Leone. Describes how the virus is transmitted by rodents. WebMD Chat Transcript: The Eleventh Plague with John Marr, M.D. John Marr, M.D. , joined us for a chat about emerging infectious diseases. (October 26, 1999) CDC: Management of Patients With Suspected Viral Hemorrhagic Fever Treatment recommendations for patients infected with Lassa, Ebola, Marburg, and Crimean-Congo viruses, and ways to prevent contagion. (February 26, 1998)

72. Hemorrhagic Fevers : Meddie Health Search hemorrhagic fevers Pointers to information about hemorrhagic feversincluding Ebola and Dengue Fever (Rating 0.00 Votes 0) Rate It. http://www.meddie.com/search/Health/Conditions_and_Diseases/Infectious_Diseases/

HOME ADD A LINK MODIFY A LINK NEW LINKS ... TOP RATED Search Meddie: the entire directory only this category More search options Home Health Conditions and Diseases ... Viral : Hemorrhagic Fevers CATEGORIES: Dengue Fever Ebola Hantavirus Marburg ... Yellow Fever ITEMS: LINKS: CDC: Management of Patients With Suspected Viral Hemorrhagic Fever Treatment recommendations for patients infected with Lassa, Ebola, Marburg, and Crimean-Congo viruses, and ways to prevent contagion. (Rating: 0.00 Votes: 0) Rate It Emerging Infectious Diseases Journal Homepage Up to date information about the spreading of infection diseases (Rating: 0.00 Votes: 0) Rate It Hemorrhagic Fevers Pointers to information about hemorrhagic fevers including Ebola and Dengue Fever (Rating: 0.00 Votes: 0) Rate It Lassa Fever treatment, prevention, and more. A wide range of Lassa Fever information concerning treatment, prevention, diagnosis, email groups, support groups, personal stories, and much more. This site is updated regularly. (Rating: 0.00 Votes: 0) Rate It NCID: Emerging Infectious Diseases Topics Emerging Infectious Diseases Resource Links (Rating: 0.00 Votes: 0)

73. UPMC Health System Bioterrorism Preparedness Group Management and Treatment of Viral hemorrhagic fevers (eg Ebola). I. DEFINITION. B.LABORATORY TESTING. Viral hemorrhagic fevers are highly contagious. http://www.health.pitt.edu/content/guidelines/Hosp guidelines hemorrhagic fevers

UPMC Health System Bioterrorism Preparedness Group Management and Treatment of Viral Hemorrhagic Fevers (e.g. Ebola) I. DEFINITION Viral hemorrhagic fever (VHF) refers to a group of illnesses that are caused by several distinct families of viruses. Some of these viruses can cause relatively mild illness. For the purpose of this document, “viral hemorrhagic fevers” will refer to the the viruses which are likely to cause life-threatening disease. This will include the following viruses: A. Ebola Hemorrhagic Fever (50-90% mortality) B. Marburg Hemorrhagic Fever (23-25% mortality) C. Lassa fever (1% mortality) D. Rift Valley Fever (1% mortality; blindness in 1-10%) II. DIAGNOSIS A.SYMPTOMS Initial symptoms include marked fever, headache, fatigue, dizziness, muscle aches, weakness, stomach pain and diarrhea. Some patients also complain of a sore throat, hiccups, rash, read and itchy eyes, vomiting blood or bloody diarrhea. Marburg hemorrhagic fever may be associated with a macuolpapular rash which is most prominent on the trunk. This begins around the 5 th day of illness.

74. The Health Library — Infectious Diseases hemorrhagic fevers. hemorrhagic feversMEDLINEplus. Viral hemorrhagic feversNCID.hemorrhagic fevers, ViralWorld Health Organization. ArenavirusesNCID. http://healthlibrary.stanford.edu/resources/internet/bodysystems/infectious3.htm

z Diseases and Disorders Use these links to jump directly to your topic of interest: Bacterial Infections Fungal Infections (Mycoses) General Immunization/Vaccination ... Viral Infections Infectious Diseases: Page 1 Page 2 Page 4 Viral Infections General Information Viral Infections:MEDLINEplus Viral Diseases:Merck Manual Viral and Rickettsial Disease Information (Index):NCID Viruses:American Society for Microbiology List of Viral Infections A B C D ... E F G H I J K L M N O P Q R S T U V W X Y Z Adenoviruses:NCID Bell's Palsy, see Nervous System, Peripheral Nervous System Diseases Bronchiolitis, see Respiratory System, Bronchitis Chronic Fatigue Syndrome, see Immune System, Autoimmmune Diseases Colorado Tick Fever:MEDLINEplus Medical Encyclopedia Common Cold, see Respiratory System, Respiratory Infections Conjunctivitis, see Eye Diseases, Conjunctival Disorders Cytomegalovirus see below Dengue Fever:NIAID Dengue:WHO Ebola, see Hemorraghic Fevers below Encephalitis , see below Enterovirus Infections (Non-Polio):NCID Epstein-Barr Virus , see below Erythema Infectiosum (B9 Parvovirus, Fifth Disease) see Children's Health, Childhood Infectious Diseases

75. Hemorrhagic Fevers | Ahealthyme.com You are here Home Health A to Z hemorrhagic fevers.hemorrhagic fevers. hemorrhagic fevers Barrett, Julia. http://www.ahealthyme.com/topic/topic100586927

Search AHealthyMe! Personalize AHealthyMe! Sign up for our Newsletter! You are here: Home Health A to Z Hemorrhagic Fevers Barrett, Julia Below: Definition Description Causes and symptoms Diagnosis ... Resources Definition Hemorrhagic fevers are caused by viruses that exist throughout the world. However, they are most common in tropical areas. Early symptoms, such as muscle aches and fever, can progress to a mild illness or to a more debilitating, potentially fatal disease. In severe cases, a prominent symptom is bleeding, or hemorrhaging, from orifices and internal organs. Description Although hemorrhagic fevers are regarded as emerging diseases, they probably have existed for many years. This designation isn't meant to imply that they are newly developing, but rather that human exposure to the causative viruses is increasing to the point of concern. These viruses are maintained in nature in insect, arthropod (insects, spiders and other invertebrates with external hard skeletons), or animal populations-so-called disease reservoirs. Individuals within these populations become infected with a virus but do not die from it. In many cases, they don't even develop symptoms. Then the viruses are transmitted from a reservoir population to humans by vectors-either members of the reservoir population or an intervening species, such as mosquitoes. Hemorrhagic fevers are generally endemic, or linked to specific locations. If many people reside in an endemic area, the number of cases may soar. For example, dengue fever, a type of hemorrhagic fever, affects approximately 100 million people annually. A large percentage of those infected live in densely populated southeast Asia; an area in which the disease vector, a mosquito, thrives. Some hemorrhagic fevers are exceedingly rare, because people very infrequently encounter the virus. Marburg hemorrhagic fever, which has affected fewer than 40 people since its discovery in 1967, provides one such example. Fatality rates are also variable. In cases of dengue hemorrhagic fever-dengue shock syndrome, 1-5% of the victims perish. On the other end of the spectrum is Ebola, an African hemorrhagic fever, that kills 30-90% of those infected.

76. Hemorrhagic Fevers Outside Africa hemorrhagic fevers outside Africa. Russell Turpin deafbox@hotmail.comThu, 04 Oct 2001 180111 +0000 Previous message Death secondary http://www.xent.com/pipermail/fork/2001-October/005048.html

77. Members Of The Bunyaviridae Family Causing Hemorrhagic Fevers - Virologie Vol. 2, Issue 4, JulyAugust 1998 Members of the Bunyaviridae family causing hemorrhagicfevers. Virologie. Vol. 2, Issue 4, July-August 1998 297-304, Reviews. http://www.john-libbey-eurotext.fr/articles/vir/2/4/297-304/en-resum.htm

Virologie. Vol. 2, Issue 4, July-August 1998 Members of the Bunyaviridae family causing hemorrhagic fevers Virologie. Vol. 2, Issue 4, July-August 1998: 297-304, Reviews Summary: The Bunyaviridae family contains several viruses which are responsible for hemorrhagic fevers and are often associated with a high rate of mortality. These are Rift Valley fever virus (Phlebovirus genus), Congo-Crimean hemorrhagic fever virus (Nairovirus genus) and the viruses of the Hantavirus genus. These viruses which are transmitted by mosquitoes, ticks or rodents respectively, are classified as emerging since they provoke epidemics or epizootics in areas where ecological modifications occurred. The molecular biology of these viruses, the genome of which is composed of three single stranded RNA segments of negative or ambisense polarity, is now well known, allowing in the near future, to propose means to protect humans and animals against these devastating diseases. Author(s): C. Prehaud, M. Bouloy Keywords: Emerging virus – Hantavirus – Rift Valley fever – Crimean-Congo hemorrhagic fever – Multinegavirus. © John Libbey Eurotext

78. Hemorrhagic Fever Viruses As Biological Weapons Medical And hemorrhagic fevers, Viral/transmission; hemorrhagic fevers, Viral/prevention control*; hemorrhagic fevers, Viral/epidemiology; Hemorrhagic http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1

79. Hemorrhagic Fevers | Building Better Health You are here Home Health A to Z hemorrhagic feversHealth Topics AZ hemorrhagic fevers. Barrett, Julia. http://www.buildingbetterhealth.com/topic/topic100586927

Medical Library Cool Tools Women's Health Men's Health ... Drug Dictionary You are here: Home Health A to Z Health Topics A-Z Hemorrhagic Fevers Barrett, Julia Below: Definition Description Causes and symptoms Diagnosis ... Resources Definition Hemorrhagic fevers are caused by viruses that exist throughout the world. However, they are most common in tropical areas. Early symptoms, such as muscle aches and fever, can progress to a mild illness or to a more debilitating, potentially fatal disease. In severe cases, a prominent symptom is bleeding, or hemorrhaging, from orifices and internal organs. Description Although hemorrhagic fevers are regarded as emerging diseases, they probably have existed for many years. This designation isn't meant to imply that they are newly developing, but rather that human exposure to the causative viruses is increasing to the point of concern. These viruses are maintained in nature in insect, arthropod (insects, spiders and other invertebrates with external hard skeletons), or animal populations-so-called disease reservoirs. Individuals within these populations become infected with a virus but do not die from it. In many cases, they don't even develop symptoms. Then the viruses are transmitted from a reservoir population to humans by vectors-either members of the reservoir population or an intervening species, such as mosquitoes. Hemorrhagic fevers are generally endemic, or linked to specific locations. If many people reside in an endemic area, the number of cases may soar. For example, dengue fever, a type of hemorrhagic fever, affects approximately 100 million people annually. A large percentage of those infected live in densely populated southeast Asia; an area in which the disease vector, a mosquito, thrives. Some hemorrhagic fevers are exceedingly rare, because people very infrequently encounter the virus. Marburg hemorrhagic fever, which has affected fewer than 40 people since its discovery in 1967, provides one such example. Fatality rates are also variable. In cases of dengue hemorrhagic fever-dengue shock syndrome, 1-5% of the victims perish. On the other end of the spectrum is Ebola, an African hemorrhagic fever, that kills 30-90% of those infected.

80. Hemorrhagic Fevers | AHealthyAdvantage You are here Home Health A to Z hemorrhagic fevers. hemorrhagic fevers. Hemorrhagicfevers are generally endemic, or linked to specific locations. http://www.ahealthyadvantage.com/topic/topic100586927

Site Search Ills and Conditions Women's Health Men's Health Senior Health ... Self-Care Centers Go To Premera Home Provider Directory Preferred Drug List Cool Tools ... Health A-Z You are here: Home Health A to Z Hemorrhagic Fevers Hemorrhagic Fevers Barrett, Julia Below: Definition Description Causes and symptoms Diagnosis ... Resources Definition Hemorrhagic fevers are caused by viruses that exist throughout the world. However, they are most common in tropical areas. Early symptoms, such as muscle aches and fever, can progress to a mild illness or to a more debilitating, potentially fatal disease. In severe cases, a prominent symptom is bleeding, or hemorrhaging, from orifices and internal organs. Description Although hemorrhagic fevers are regarded as emerging diseases, they probably have existed for many years. This designation isn't meant to imply that they are newly developing, but rather that human exposure to the causative viruses is increasing to the point of concern. These viruses are maintained in nature in insect, arthropod (insects, spiders and other invertebrates with external hard skeletons), or animal populations-so-called disease reservoirs. Individuals within these populations become infected with a virus but do not die from it. In many cases, they don't even develop symptoms. Then the viruses are transmitted from a reservoir population to humans by vectors-either members of the reservoir population or an intervening species, such as mosquitoes. Hemorrhagic fevers are generally endemic, or linked to specific locations. If many people reside in an endemic area, the number of cases may soar. For example, dengue fever, a type of hemorrhagic fever, affects approximately 100 million people annually. A large percentage of those infected live in densely populated southeast Asia; an area in which the disease vector, a mosquito, thrives. Some hemorrhagic fevers are exceedingly rare, because people very infrequently encounter the virus. Marburg hemorrhagic fever, which has affected fewer than 40 people since its discovery in 1967, provides one such example. Fatality rates are also variable. In cases of dengue hemorrhagic fever-dengue shock syndrome, 1-5% of the victims perish. On the other end of the spectrum is Ebola, an African hemorrhagic fever, that kills 30-90% of those infected.

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