How many types of viral hemorrhagic fevers are documented?
Viral hemorrhagic fevers (VHFs) are a group of illnesses caused by four families of viruses. These include the Ebola and Marburg, Lassa fever, and yellow fever viruses.
What is the best treatment for viral hemorrhagic fevers?
While no specific treatment exists for most viral hemorrhagic fevers, the antiviral drug ribavirin (Rebetol, Virazole) might shorten the course of some infections and prevent complications in some people. Other medications are being developed.
What system does a viral hemorrhagic fever affect?
In general, the term “viral hemorrhagic fever” is used to describe a severe multisystem syndrome (multisystem in that multiple organ systems in the body are affected). Characteristically, the overall vascular system is damaged, and the body’s ability to regulate itself is impaired.
Is viral hemorrhagic fever curable?
How are viral hemorrhagic fevers treated? Generally there is no known cure or treatment for these diseases. People with these illnesses may get supportive treatment. This may include getting fluids or assistance with breathing and pain relievers.
What is the most common cause of viral hemorrhagic fever?
Viral hemorrhagic fevers are spread by contact with infected animals or insects. The viruses that cause viral hemorrhagic fevers live in a variety of animal and insect hosts. Most commonly the hosts include mosquitoes, ticks, rodents or bats.
How is viral hemorrhagic fevers transmitted?
Viruses causing hemorrhagic fever are initially transmitted to humans when the activities of infected reservoir hosts or vectors and humans overlap. The viruses carried in rodent reservoirs are transmitted when humans have contact with urine, fecal matter, saliva, or other body excretions from infected rodents.
Is viral hemorrhagic fever airborne?
Yes. Many hemorrhagic fever viruses are considered possible bioterrorism agents because they are highly infectious, can be aerosolized (made airborne), and would cause serious illness in the target population.
Is dengue a hemorrhagic fever?
Mild dengue fever causes a high fever and flu-like symptoms. The severe form of dengue fever, also called dengue hemorrhagic fever, can cause serious bleeding, a sudden drop in blood pressure (shock) and death.
Is dengue hemorrhagic fever fatal?
Some patients with dengue fever go on to develop dengue hemorrhagic fever (DHF), a severe and sometimes fatal form of the disease. Around the time the fever begins to subside (usually 3–7 days after symptom onset), the patient may develop warning signs of severe disease.
How do you treat dengue hemorrhagic fever?
There is no specific medicine to treat dengue infection. If you think you may have dengue fever, you should use pain relievers with acetaminophen and avoid medicines with aspirin, which could worsen bleeding. You should also rest, drink plenty of fluids, and see your doctor.
Which of the following is a complication of dengue hemorrhagic fever?
The symptoms of dengue hemorrhagic fever can trigger dengue shock syndrome. Dengue shock syndrome is severe, and can lead to excessive bleeding and even death.
WHO criteria dengue hemorrhagic fever?
The definition of DHF consists of 4 clinical criteria: fever, a hemorrhagic tendency (spontaneous bleeding or a positive tourniquet test result), thrombocytopenia (platelet count, ≤100000 cells/mm3), and plasma leakage as shown by pleural effusion, ascites, or ≥20% hemoconcentration.
What is dengue hemorrhagic fever DHF?
Dengue hemorrhagic fever (DHF): A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage (bleeding) and circulatory collapse (shock).
What is the 4 stages of dengue fever?
Dengue begins abruptly after a typical incubation period of 5–7 days, and the course follows 3 phases: febrile, critical, and convalescent.
Does Dengue Fever stay in your system?
Dengue causes flu-like symptoms and lasts for 2-7 days. Dengue fever usually occurs after an incubation period of 4-10 days after the bite of the infected mosquito.
Can I have dengue without rashes?
The presence of skin rash aids in early diagnosis of dengue fever. Although patients with dengue fever and skin rash have itching and swollen palms and soles, the disease course and complications are not worse than among patients who do not have skin rash.