This is manifested by one or more of the following increase by. Dengue fever, a very old disease, has reemerged in the past 20 years with an expanded geographic distribution of both the viruses and the mosquito vectors, increased epidemic activity, the development of hyperendemicity the cocirculation of multiple serotypes, and the emergence of dengue hemorrhagic fever in new geographic regions. From 1975 through 2009, symptomatic dengue virus infections were classified according to the who guidelines as dengue fever, dengue hemorrhagic fever dhf, and dengue shock syndrome the most severe form of dhf. Dengue denggay fever is a mosquitoborne disease that occurs in tropical and subtropical areas of the world.
Dengue and dengue hemorrhagic fever dhf are caused by one of four closely related, but antigenically distinct, virus serotypes den1, den2, den3, and den4, of the genus flavivirus. It can also become dengue shock syndrome, which causes massive bleeding and shock. Dengue is a mosquitoborne acute systemic viral infection caused by any of the four serotypes of the dengue virus epidemiology. Dengue hemorrhagic fever is a severe, sometimes fatal manifestations of dengue virus infection characterized by a bleeding diathesis and hypovolemic shock. Management of dengue fever and dengue hemorrhagic fever slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Burke, evidence that maternal dengue antibodies are important in the development of dengue hemorrhagic fever in infants, american journal of tropical medicine and hygiene, vol. May 24, 2019 dengue, also known as dengue fever, is a viral disease transmitted to humans by mosquitoes of the genus aedes. Pathophysiology dengue hemorrhagic fever free download as word doc. Very good for underpostgraduate and cosultant physcians. There are four dengue virus denv types denv1, denv2, denv3, and denv4, all of which are capable of inducing severe disease dengue hemorrhagic fever dhfdengue shock syndrome dss. Symptoms include a high fever, headaches, joint and muscle pain, vomiting, and a rash. It is felt that competent mosquito vectors are located in twentyeight of the fifty states.
Also papaya extract remedy and platelets therapy included. Dengue hemorrhagic fever health sciences wellness scribd. Other members of the same genus include yellow fever virus, west nile virus, zika virus, st. May 14, 2020 may 24, 2019 dengue, also known as dengue fever, is a viral disease transmitted to humans by mosquitoes of the genus aedes. The cause of thrombocytopenia in dengue is thought to be an immunerelated process. A second exposure to the virus can result in dengue hemorrhagic fever, a.
Dengue hemorrhagic fever free download as word doc. Dengue fever is a mosquitoborne viral illness found throughout the. Infection with one of these serotypes does not provide crossprotective immunity, so persons living in a dengue endemic area can have four dengue infections. A second exposure to the virus can result in dengue hemorrhagic fever, a lifethreatening illness. There are four dengue virus denv types denv1, denv2, denv3, and denv4, all of which are capable of inducing severe disease dengue hemorrhagic fever dhf dengue shock syndrome dss. Dengue hemorrhagic fever pathophysiology diagram scribd. Other members of the same genus include yellow fever virus, west nile virus, st. Infection with one serotype of denv provides immunity to that serotype for life, but provides no longterm immunity to other serotypes. Dengue hemorrhagic fever pathophysiology diagram free download as pdf file.
Dengue hemorrhagic fever is a severe, potentially deadly infection spread by certain species of mosquitoes aedes aegypti. Symptoms typically begin three to fourteen days after infection. These viruses are related closely to each other antigenically, and, as. Aug 25, 2019 dengue fever, or west nile fever, is a mild viral illness transmitted by mosquitoes which causes fever, rashes and muscle and joint aches. Pathophysiology and management of dengue hemorrhagic fever. Scribd is the worlds largest social reading and publishing site. Primarily a disease of the tropics, dengue fever is caused by a virus caused by a mosquito which prefers to feed on humans and is native to the tropics. A severe form of dengue fever, also called dengue hemorrhagic fever, can cause severe bleeding, a sudden drop in blood pressure shock and death. Gubler d engue and dengue hemorrhagic fever dhf are caused by infection with dengue viruses. There are four antigenic types, and they are transmitted by a mosquito of the genus aedes usually a.
Dengue chapter 4 2020 yellow book travelers health. It is transmitted by mosquitoes of the genus aedes, which are widely distributed in subtropical and tropical areas of the world see the image below. Around the time the fever begins to subside usually 37 days after symptom onset, the patient may develop warning signs of severe disease. Who, comprehensive guidelines for prevention and control of dengue and dengue haemorrhagic fever, 2011. Dengue hemorrhagic fever and dengue shock syndrome some patients with dengue fever go on to develop dengue hemorrhagic fever dhf, a severe and sometimes fatal form of the disease. The clinical spectrum of the disease ranges from dengue fever to dengue hemorrhagic fever and dengue shock syndrome. Hemorrhagic dengue fever leads to leakage from blood vessels and this can lead to increased vascular permeability. Definition dengue fever and dengue hemorrhagic fever dhf are acute febrile diseases which occur in the tropics, can be. Dengue is the most common and important arthropodborne viral arboviral illness in humans. These may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin rash. Mild dengue fever causes high fever, rash, and muscle and joint pain. Dengue and dengue hemorrhagic fever, 2nd edition 2nd. April 25, 2010 nursing resource admin communicable diseases, 4. Dengue hemorrhagic fever pathophysiology diagram free download as word doc.
The pathology of dengue hemorrhagic fever sciencedirect. Dengue fever is common in tropical areas, so take extra precautions if you travel somewhere with this type of climate. First seen in asia, africa, and north america in the late 1700s, it was first thought of. A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage bleeding and circulatory collapse. The viruses that cause dengue fever are related to those that. History of dhf the origins of the word dengue are not clear, but one theory is that. Dengue fever has emerged as a global public health problem in the recent decades. Dengue is a febrile illness caused by a flavivirus transmitted by aedes aegypti or aedes albopictus mosquitoes while taking a blood meal. Untreated dhf may result in blood vessel collapse, causing a usually fatal condition known as dengue shock syndrome. Dengue hemorrhagic fever bleeding infection scribd.
Dengue fever is a mosquitoborne tropical disease caused by the dengue virus. Louis encephalitis virus, japanese encephalitis virus, tickborne encephalitis, kyasanur forest disease virus, and omsk hemorrhagic fever virus. Dengue viruses are spread to people through the bite of an infected aedes species ae. Dengue virus and dengue pathophysiology part 2 youtube. Rumintang elisabeth constantya mamora 1006672951 definition dengue hemorrhagic fever is a severe, potentially deadly infection spread by certain species of mosquitoes. The incidence of dengue has increased dramatically in recent decades, with estimates of 40%50% of the worlds population at risk for the. The incidence of dengue is currently increasing dramatically, and it. Dengue is common in more than 100 countries around the world.
Overview dengue is a mosquitoborne disease cause by any one of four closely related dengue viruses denv 1,2,3 and 4. In a small proportion of cases, the disease develops into severe dengue, also known as dengue. Flaviviruses 1,2,3,4, a family of togaviridae, are small viruses that contain singlestranded rna. Dengue fever is a disease spread by the aedes aegypti mosquito and caused by one of four dengue viruses that are closely related. In some cases, dengue turns into dengue hemorrhagic fever, which causes bleeding from your nose, gums, or under your skin. Page 1 objective at the end of the session the learner will be able to. Dengue part 1 pathophysiology by dr ariff arithra duration. Infection with one of these serotypes does not provide crossprotective immunity, so persons living in a dengueendemic area can have four dengue infections during their lifetimes. Known also as dengue hemorrhagic fever dhf, it starts abruptly with high continuous fever and headache plus respiratory and intestinal symptoms with sore throat, cough, nausea, vomiting, and abdominal pain. Tc dengue hemorrhagic fever pleural effusion, tc liver pathology. It is a vasculopathy that consists in endothelial lesions which allow plasma leakage and hemorrhages. Dengue fever virus is an rna virus of the family flaviviridae. Dengue fever dengue hemorrhagic fever dengue fever dengue hemorrhagic fever bruce r. Read more about symptoms, diagnosis, treatment, complications, causes and prognosis.
Suspect dengue fever if patients who live in or have traveled to endemic areas if they have typical symptoms. Dengue begins abruptly after an incubation period of 57 days range, 310 days, and the course follows 3 phases. Comprehensive guidelines for prevention and control of dengue and dengue haemorrhagic fever vii dengue fever is the fastest emerging arboviral infection spread by aedes mosquitoes with major public health consequences in over 100 tropical and subtropical countries in southeast asia, the western pacific and south and central america. Dengue fever virus denv is an rna virus of the family flaviviridae. Dengue hemorrhagic fever pathophysiology free download as word doc. Thrombocytopenia, preventitive, arbovirus, bleeding, hemorrhage introduction dengue fever df is the most common mosquitoborne human viral illness worldwide, and has rapidly spread to reach hyperendemic proportions in the urban tropics over the last quarter of a century. The severity of the disease can be affected by the infecting virus itself and the age, immune status, and genetic predisposition of the person infected. Dengue hemorrhagic fever synonyms, dengue hemorrhagic fever pronunciation, dengue hemorrhagic fever translation, english dictionary definition of dengue hemorrhagic fever. Department of health and human services centers for.
Other articles where dengue hemorrhagic fever is discussed. Dengue fever can cause a potentially fatal hemorrhagic fever with a bleeding tendency and shock dengue hemorrhagic fever and dengue shock syndrome. Dengue fever, or west nile fever, is a mild viral illness transmitted by mosquitoes which causes fever, rashes and muscle and joint aches. Dengue chapter 4 2020 yellow book travelers health cdc. Dengue hemorrhagic fever red blood cell blood scribd. Treatment includes rehydration and recovery is expected. Pathogenesis of dengue haemorrhagic fever and its impact on. Dengue virus infections occur predominately in tropical and subtropical regions. May 18, 2016 dengue part 1 pathophysiology by dr ariff arithra duration. The infection can lead to a broad spectrum of symptoms ranging from mild, nonspecific, influenzalike prodromes called dengue fever to more severe forms known as. Mar 15, 2016 dengue hemorrhagic fever case study 1.
Forty percent of the worlds population, about 3 billion people, live in areas with a risk of dengue. Known also as dengue hemorrhagic fever dhf, it starts abruptly with high continuous fever and headache plus respiratory and intestinal symptoms with sore throat. Causes, incidence, and risk factors four different dengue viruses are known to cause dengue hemorrhagic fever. Management of dengue fever dengue hemorrhagic fever. Dengue hemorrhagic fever case study linkedin slideshare. Dengue hemorrhagic fever may arise from repeated infection with different serotypes of the dengue virus. They may range from subclinical infection to dengue fever, dengue hemorrhagic fever dhf, and eventually dengue shock syndrome dss. Buy dengue and dengue hemorrhagic fever, 2nd edition.
Pathogenesis of dengue haemorrhagic fever and its impact. Dengue fever clinical medicine medical specialties. Dengue fever is common in tropical areas, so take extra precautions if you travel somewhere with this type of. The viruses are transmitted to humans by the bite of an infected mosquito. The case definition was changed to the 2009 clinical classification after reports that the case definition of dhf was both too. Dengue hemorrhagic fever is a severe, potentially deadly infection spread by certain species of mosquitoes aedes aegypti pleural effusion is excess fluid that accumulates in the pleural cavity, the fluidfilled space that surrounds the lungs. Dengue fever free download as powerpoint presentation. Dengue is often a leading cause of illness in areas. Dengue infectious diseases merck manuals professional edition. May 03, 2019 the first dengue hemorrhagic fever epidemic in the americas occurred in cuba in 1981 and involved serotype 2 dengue denv2, with hundreds of thousands of cases of dengue in both children and adults, 24,000 cases of dengue hemorrhagic fever, 10,000 cases of dengue shock syndrome, and 158 reported deaths. Dengue hemorrhagic fever can occur when someone is bitten by a mosquito or exposed to blood infected with the dengue virus. Life cycle of the dengue fever virus hhmi biointeractive video duration.
This increase is believed to be to be due to multiple factors. Aug 17, 2011 management of dengue fever and dengue hemorrhagic fever slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Today, dengue is the most frequent arbovirus infection with more than 100 million cases annually throughout the world, including up to 0. If you continue browsing the site, you agree to the use of cookies on this website.
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