Geometry.Net - Health_Conditions: Dengue Fever

Pediatric Oncall- Dengue Fever
Find out more about dengue fever and its complications and treatment.Category Health Conditions and Diseases dengue feverFind out more about dengue fever and its complications at www.pediatriconcall.com. DENGUEFEVER. Q Q How does dengue fever occur? A
http://www.pediatriconcall.com/forpatients/CommonChild/dengue_fever.asp

Extractions: A: Dengue viruses spread to humans by the bite of female mosquitoes. These mosquitoes acquire the virus while feeding on the blood of an infected person. The virus circulates in the blood of infected humans for 2 –7 days leading to fever. Recovery from infection provided immunity against that particular virus but offers only partial protection against the other three viruses. Infact, subsequent infection increases the risk of a more complicated fever called as " dengue hemorrhagic fever ". A: In infants and young children, dengue presents as a mild fever with rash. Older children and adults may have the classical symptoms of high fever, severe headache, pain behind the eyes, pain in the joints and muscles and rash. The pain in the back may be so severe that it is also called as backbreaking fever. Dengue fever is usually self-limiting.
Mosquitos And Dengue Fever
Information about the disease, with emphasis on the types of mosquitoes that transmit it, and a discussion of the two forms of dengue fever.
http://www.biohaven.com/dengue.htm

Extractions: Dengue fever, although little known in the United States, is a serious disease of Asia and Africa. Classic dengue, known for its low mortality but very uncomfortable symptoms, has become more serious, both in frequency and mortality, in recent years. Dengue is caused by an RNA flavivirus exhibiting many serotypes. Symptoms vary according to the serotype. The main vector of dengue, Aedes aegypti , flourishing in mankind's urban to suburban environments, has spread the disease to many parts of the world. Another mosquito, Aedes albopictus , a less important urban vector, has helped maintain the prevalence of dengue in Asian regions. A. aegypti is the most important vector of dengue. The spread of dengue throughout the world can be directly attributed to the proliferation and adaptation of this mosquito. The insect originated in Africa as a "tree-hole" mosquito, breeding in any temporary puddles of water left by recent rains. The "original" mosquito, it is believed, proliferated only during high humidity and rain. Only the eggs survived when the rain stopped and the puddles evaporated. Aedes eggs do need water to hatch, however. Thus, adult preponderance declined as the rains ceased. In short, the adult mosquitoes would bite (acting as possible dengue vectors) only during the rainy season. When man invented pottery and urbanized his surroundings, the mosquito developed a strain that could breed in man-made containers (i.e., clay jars) all year. Therefore, as the hypothesis suggests, this new strain of A. aegypti became more adapted to "urban" life as people moved away from the proximity of natural water and started to sequester water in containers.
CTD Redirect Page
dengue fever Information Center Public Health Information Health Education Resources Information about Mosquitoes and Mosquito Control Information for Health Care Providers Links to Related Information Skip Menu. dengue fever Information Center. Home Page
http://www.who.int/ctd/html/dengue.html
CDC Dengue Fever Home Page - CDC Division Of Vector-Borne Infectious Diseases (D
The Centers for Disease Control and Prevention presents detailed information about this mosquitoborn Category Health Conditions and Diseases dengue feverCDC dengue fever Home Page. Perspectives. During most of this time, dengue feverwas considered a benign, nonfatal disease of visitors to the tropics.
http://www.cdc.gov/ncidod/dvbid/dengue/

Extractions: Dengue and dengue hemorrhagic fever (DHF) are caused by one of four closely related, but antigenically distinct, virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4), of the genus Flavivirus . Infection with one of these serotypes does not provide cross-protective immunity, so persons living in a dengue-endemic area can have four dengue infections during their lifetimes. Dengue is primarily a disease of the tropics, and the viruses that cause it are maintained in a cycle that involves humans and Aedes aegypti , a domestic, day-biting mosquito that prefers to feed on humans. Infection with dengue viruses produces a spectrum of clinical illness ranging from a nonspecific viral syndrome to severe and fatal hemorrhagic disease. Important risk factors for DHF include the strain and serotype of the infecting virus, as well as the age, immune status, and genetic predisposition of the patient. The first reported epidemics of dengue fever occurred in 1779-1780 in Asia, Africa, and North America; the near simultaneous occurrence of outbreaks on three continents indicates that these viruses and their mosquito vector have had a worldwide distribution in the tropics for more than 200 years. During most of this time, dengue fever was considered a benign, nonfatal disease of visitors to the tropics. Generally, there were long intervals (10-40 years) between major epidemics, mainly because the viruses and their mosquito vector could only be transported between population centers by sailing vessels.
The CDC Dengue Fever Home Page Has Moved - CDC Division Of Vector-Borne Infectio
The CDC dengue fever Home Page has moved. Please update your bookmarksor links to the new address http//www.cdc.gov/ncidod/dvbid/dengue.
http://www.cdc.gov/ncidod/dvbid/dhspot98.htm
Dengue Fever - Travel Medicine For The Adventure Traveler By Alan Spira, M.D. ,
dengue fever is a viral infection common throughout the tropical regions of the world. It is spread by Aedes mosquitoes.
http://www.armchair.com/info/spira7.html

Extractions: Info Escapes Air Hotels ... Get your major medical travel insurance from Armchair World Somewhere in Tanzania, maybe it was in Uganda, a lucky mosquito found its prey, zoomed in on its target and stole some blood from an unlucky human. This bite began innocently enough - happening during the day, not causing much of an itch - but several days later it lost all pretense of innocence. Lethargy, an unusual amount of tiredness, was the first sign that something was going awry. It was soon followed by a headache behind the eyes that throbbed and pounded, with a sensation of pressure like a kettle brewing and boiling. A fever, mild at first, but later intense with sweating, came bundled with ferocious muscle aches. These aches were rooted deep in the calves and back, and felt like being punched from the inside-out. The once-dinner-for-a-stray mosquito became apathetic and lost all appetite. What on earth could this be? Malaria? Typhoid? What, what, what? A funny pink rash showed up soon after. It didn't itch, it didn't bleed, it didn't hurt. It just spread - over the chest, belly, and back. It, along with the fever, lightened after two days but just two days later returned with even greater dramatic force. Ah, I think we have enough clues and a diagnosis now... There can be a few days respite but the fever and rash often recur, and this is known as the 'saddleback pattern'. With Dengue Hemorrhagic Fever the blood cells are crippled and bleeding develops - in the gums, the skin, the intestinal tract. With the shock syndrome the blood vessels don't work quite right, and the blood pressure drops precipitously; as a result the blood fails to meet the metabolic demands of the cells in the body - which is the definition of shock.
DENGUE AND DENGUE HAEMORRHAGIC FEVER
While there is no cure for this virus, Dr. Alan Spira offers advice for travelers on how to prevent contracting it.
http://www.who.int/inf-fs/en/fact117.html

Extractions: DENGUE AND DENGUE HAEMORRHAGIC FEVER Dengue is a mosquito-borne infection which in recent years has become a major international public health concern. Dengue is found in tropical and sub-tropical regions around the world, predominantly in urban and semi-urban areas. Dengue haemorrhagic fever (DHF), a potentially lethal complication, was first recognized in the 1950s during the dengue epidemics in the Philippines and Thailand, but today DHF affects most Asian countries and has become a leading cause of hospitalisation and death among children in several of them. There are four distinct, but closely related, viruses that cause dengue. Recovery from infection by one provides lifelong immunity against that serotype but confers only partial and transient protection against subsequent infection by the other three. There is good evidence that sequential infection increases the risk of more serious disease resulting in DHF. Prevalence The global prevalence of dengue has grown dramatically in recent decades. The disease is now endemic in more than 100 countries in Africa, the Americas, the Eastern Mediterranean, South-east Asia and the Western Pacific. South-east Asia and the Western Pacific are most seriously affected. Before 1970 only nine countries had experienced DHF epidemics, a number that had increased more than four-fold by 1995.
Aedes Aegypti And Dengue Fever
Paper on Aedes aegypti as a disease vector.
http://www.microscopy-uk.org.uk/mag/art98/aedrol.html

Extractions: There are many types of mosquito living in the tropical and sub-tropical regions of the world, we can roughly divide them into two groups, CULEX and AEDES, but perhaps one of the most important is Aedes aegypti . According to the World Health Organisation, the virus for Dengue fever is the most important arbovirus to man in the world, and since Aedes has been found to transmit this virus, it has been widely studied and blamed as the vector. This mosquito is small in comparison to others, usually between three to four millimetres in length discounting leg length. It is totally black apart from white 'spots' on the body and head regions and white rings on the legs. The thorax is decorated with a white 'Lyre' shape of which the 'chords' are two dull yellow lines. Its wings are translucent and bordered with scales. At rest, the insect turns up its hind legs in a curved fashion and usually cleans them by rubbing one against the other, or exercises them by crossing them and alternately raising and lowering them, this may even be a way of helping digested 'food' along the alimentary canal, but this is just a guess on my part. Many people believe mosquitoes only live two or three days, but in actual fact, left unmolested they can live for months. The males of all species of mosquitoes do not bite humans or animals of any species, they live on fruit. Only the female bites for blood which she needs to mature her eggs. The eggs of most species are laid together in a raft form, but
EMedicine - Dengue Fever : Article By Daniel D Price, MD
disease in terms of morbidity and mortality. dengue fever is a benign acute febrile syndrome occurring in tropical
http://www.emedicine.com/emerg/topic124.htm

Extractions: (advertisement) Home Specialties CME PDA ... Patient Education Articles Images CME Patient Education Advanced Search Link to this site Back to: eMedicine Specialties Emergency Medicine Infectious Diseases Last Updated: January 21, 2002 Rate this Article Email to a Colleague Synonyms and related keywords: breakbone fever, ki denga pepo AUTHOR INFORMATION Section 1 of 11 Author Information Introduction Clinical Differentials ... Bibliography Author: Daniel D Price, MD , Medical Director of Life Flight Network, Assistant Professor, Department of Emergency Medicine, Oregon Health Sciences University Coauthor(s): Sharon R Wilson, MD , Assistant Professor, Department of Emergency Medicine, University of California at Davis Medical Center Daniel D Price, MD, is a member of the following medical societies: American College of Emergency Physicians , and Society for Academic Emergency Medicine Editor(s): William Chiang, MD , Assistant Director, Assistant Professor of Clinical Surgery/Emergency Medicine, Department of Emergency Medicine, Bellevue Hospital Center; Francisco Talavera, PharmD, PhD
Dengue
dengue fever, Dengue Hemorrhagic Fever, and Dengue Shock Syndrome Dengue virus, first isolated in 1943, is morphologically indistinguishable from the agent causing yellow fever.
http://home.coqui.net/myrna/dengue.htm

Extractions: Susceptibility is universal, but children generally have milder illness than adults. All four dengue serotypes produce clinically identical disease, and all can produce DHF and dengue shock syndrome (DSS) in decreasing order of frequency: serotypes 2, 3, 4, and 1. Individuals infected with one strain maintain lifelong homotypic immunity while remaining susceptible to infections with other heterotypic strains. Interestingly, DHF/DSS is more likely to develop if an individual previously infected with one serotype is later inoculated with a different viral strain. DHF and DSS usually occur as a second dengue infection in children and in infants born to dengue-immune mothers. Repeated episodes of DHS/DSS have not been described in the same individual. Clinical criteria for DHF and DSS are shown on the Table on the previous page and include hemoconcentration (Hct > 20% of baseline), thrombocytopenia, and circulatory collapse, often associated with severe end-organ dysfunction. DHF and DSS are recognized primarily in children; in tropical Asia, DSS is observed almost exclusively among indigenous children 15 years of age and younger. Ilness is often biphasic, beginning abruptly with fever, malaise, headache, anorexia, nausea and vomiting, cough, and facial flushing. Severe bone and limb pain are often absent. Coincident with defervescence, the patients condition worsens with profound weakness and prostration, diaphoresis, restlessness, facial pallor and circumoral cyanosis, cool and clammy extremities, rapid but thready pulse, and a narrow pulse pressure (
Dengue Fever Hub
Offers a definition followed by links to overviews, case reports, studies and FAQs.
http://www.healthubs.com/dengue

Extractions: Dengue fever is a viral disease carried by the Aedes mosquitos. It is characterized by sudden onset, high fever, severe headache, joint and muscle pain and rash. Nausea and vomiting, loss of appetite, and altered taste sensation are common. A rash may appear 3 to 4 days after onset of fever and may spread from the torso to the arms, legs, and face. The disease is usually benign and self-limiting after about 7 days. Dengue may also present as a severe and fatal hemorrhagic disease, called dengue hemorrhagic fever. There is no specific treatment for dengue infection. Acne Allergy Antibiotics Antioxidants ... CDC Dengue Fever Home Page - by CDC Division of Vector-Borne Infectious Diseases (DVBID). Dengue Fever and Dengue Hemorrhagic Fever - by John P. Roche, Boston College. Dengue by National Institute of Allergy and Infectious Diseases Dengue Fever by University of Maryland Medicine Dengue fever by MEDLINEplus - updated by J. Gordon Lambert, MD, Associate Medical Director; RxRemedy. The fight against dengue, the viral nemesis of military operations
Dengue/Dengue Hemorrhagic Fever MEDSTUDENTS-INFECTIOUS DISEASES
Dengue/Dengue Hemorrhagic Fever. Introduction dengue fever is an acute febrile infectious disease, caused by all four
http://www.medstudents.com.br/dip/dip3.htm

Extractions: Medstudents' Homepage Dengue fever is an acute febrile infectious disease, caused by all four serotypes (1, 2, 3 or 4) of a virus from genus Flavivirus, called dengue virus. Its the most prevalent flavivirus infection of humans, with a worldwide distribution in the tropics and warm areas of the temperate zone corresponding to that of the principal vector, Aedes aegypti. When simultaneous or sequential introduction of two or more serotypes occurs in the same area, there may be an increased number of cases with worse clinical presentation (dengue hemorrhagic fever). The term hemorrhagic is imprecise, because what characterizes this form of the disease is not the presence of hemorrhagic manifestations, but the abrupt increase of capillary permeability, with diffuse capillary leakage of plasma, hemoconcentration and, in some cases, with non-hemorrhagic hypovolemic shock (dengue shock syndrome). The highest incidence of dengue is in southeast Asia, India and the American tropics, where A. aegypti can be found. In the 1980s, dengue emerged in explosive epidemics in Rio de Janeiro (1986 - serotype 1 and 1990 - serotype 2 was isolated in Niterói city), São Paulo and in many other towns and cities in Brazil. In areas such as southeast of Asia, where all four dengue virus types are hyperendemic, children are almost exclusively affected, and seroprevalence approaches 100% by young adulthood. Transmission occurs by the bite of Aedes aegypti female mosquitoes - the same vector of urban yellow fever - a day-active species with low fly-autonomy that is abundant in and around human habitations. In Brazil and other countries Aedes albopictus may also be responsible for transmission. Viremic humans (till the fifth day of disease) serve as the source of virus for mosquito infection; there is not person-to-person transmission. Movement of viremic humans provides the principal means of spread, and rapid air travel is a factor in most recent epidemic emergences.
CDC Division Of Vector-Borne Infectious Diseases (DVBID)
Details about this national and international reference center for vectorborne viral and bacterial diseases. Location Colorado, USA. Covers disorders such as lyme, plague, yellow fever and dengue fever. Publications, links and details about specimen submissions.
http://www.cdc.gov/ncidod/dvbid/
Dengue Fever Information Center
of dengue fever.Home About DOH Resources Environment Statistics Vital Records Permits Rules SearchEngine, dengue fever Information Center Home Page.
http://www.state.hi.us/health/dengue/
Dengue FeverControl Room At Scout Bhaban Opens - Bangladesh Observer May 23
Scout Bhaban (Bangladesh)medical facility, article in Bangladesh Observer.
http://www.geocities.com/prevent_dengue/press/bomay23.html

Extractions: Dengue fever Control room at Scout Bhaban opens Bangladesh Scouts has opened a round-the-clock control room at Scout Bhaban in Kakrail aiming to create awareness about the dengue fever for checking the epidemic situation in the capital, reports UNB. Any person, including scouts and rovers, who wants to seek advice about the fever and its protection or donate blood for the patients may contact the control room over telephone number 9333651, said a press release on Tuesday. Scouts and rovers of various educational institutions are taking part in the dengue protection programme by visiting door-to-door including in slum areas and distributing leaflets to make the people aware of the disease.
Communicable Diseases - Dengue Fever
dengue fever (breakbone fever, dengue hemorrhagic fever). What is dengue fever?dengue fever is a viral illness spread by certain types of mosquitoes.
http://www.state.hi.us/health/resource/comm_dis/cdddengu.htm

Extractions: (breakbone fever, dengue hemorrhagic fever) What is dengue fever? Dengue fever is a viral illness spread by certain types of mosquitoes. The disease occurs mainly in tropical Asia, Africa, and the Caribbean. It is most common during the rainy season in areas infested with infected mosquitoes. Occasionally, persons arriving from other countries may enter the United States with dengue fever. How do you get it? The symptoms of dengue fever include sudden onset of fever, painful headaches, eye, joint, and muscle pain, and rash. The rash, typically begins on the arms or legs 3 to 4 days after the onset of fever. The sympotms usually resolve completely within 1 to 2 weeks. Occasionally, individuals with dengue fever experience blood clotting problems. When this occurs, the illness is called dengue hemorrhagic fever. Dengue hemorrhagic fever is a very serious illness characterized by abnormal bleeding and very low blood pressure (shock). When do symptoms start?
CDC - Dengue Fever Information For Travelers
Discusses transmission by mosquitoes, symptoms, risks and general regional outbreak characteristics.
http://www.cdc.gov/travel/dengfvr.htm

Extractions: Dengue viruses are transmitted by mosquitoes, which are most active during the day. These vector mosquitoes are found near human habitations and are often present indoors. Epidemic transmission is usually seasonal, during and shortly after the rainy season. influenza measles malaria typhoid ... leptospirosis , and scarlet fever. The symptoms of dengue can be treated with bed rest, fluids, and medications to reduce fever, such as acetaminophen; aspirin should be avoided. Travelers should alert their physician of any fever illnesses occurring within 3 weeks after leaving an endemic area. There is no vaccine for dengue fever; therefore, the traveler should avoid mosquito bites by remaining in well screened or air-conditioned areas. Travelers to tropical areas are advised to use mosquito repellents on skin and clothing, to bring aerosol insecticides to use indoors, and use bednets.
CDC Dengue Fever Home Page - CDC Division Of Vector-Borne Infectious Diseases (D
The Centers for Disease Control and Prevention presents detailed information about this mosquitoborn disease, including maps of distribution of the mosquito and the disease, and photographs of the mosquito and the virus.
http://www.cdc.gov/ncidod/dvbid/dengue/index.htm

Extractions: Dengue and dengue hemorrhagic fever (DHF) are caused by one of four closely related, but antigenically distinct, virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4), of the genus Flavivirus . Infection with one of these serotypes does not provide cross-protective immunity, so persons living in a dengue-endemic area can have four dengue infections during their lifetimes. Dengue is primarily a disease of the tropics, and the viruses that cause it are maintained in a cycle that involves humans and Aedes aegypti , a domestic, day-biting mosquito that prefers to feed on humans. Infection with dengue viruses produces a spectrum of clinical illness ranging from a nonspecific viral syndrome to severe and fatal hemorrhagic disease. Important risk factors for DHF include the strain and serotype of the infecting virus, as well as the age, immune status, and genetic predisposition of the patient. The first reported epidemics of dengue fever occurred in 1779-1780 in Asia, Africa, and North America; the near simultaneous occurrence of outbreaks on three continents indicates that these viruses and their mosquito vector have had a worldwide distribution in the tropics for more than 200 years. During most of this time, dengue fever was considered a benign, nonfatal disease of visitors to the tropics. Generally, there were long intervals (10-40 years) between major epidemics, mainly because the viruses and their mosquito vector could only be transported between population centers by sailing vessels.
Hemorrhagic Fevers
Pointers to information about hemorrhagic fevers including Ebola and dengue fever
http://www.who.int/emc/diseases/ebola/index.html
REDIRECTING
A technical discussion of an epidemiological study of dengue fever in Yangon.
http://www.acithn.uq.edu.au/phd/thesis/thein.html

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