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). DHF starts abruptly with high continuous fever and headache plus respiratory and intestinal symptoms with sore throat, cough, nausea, vomiting, and abdominal pain. Shock occurs after 2 to 6 days with sudden collapse, cool clammy extremities, weak thready pulse, and blueness around the mouth (circumoral cyanosis). There is bleeding with easy bruising, blood spots in the skin (petechiae), spitting up blood (hematemesis), blood in the stool (melena), bleeding gums and nosebleeds (epistaxis). Pneumonia and heart inflammation (myocarditis) may be present. The mortality is appreciable ranging from 6 to 30%. Most deaths occur in children. Infants under a year of age are especially at risk of death. DHF is also called Philippine, Thai, or Southeast Asian hemorrhagic fever and dengue shock syndrome.
Q.How are dengue and dengue hemorrhagic fever (DHF) spread? A. Dengue is transmitted to people by the bite of an Aedes mosquito that is infected with a dengue ...
INFECTIOUS AGENT. The 4 dengue viruses (DENV) are immunologically related, positive-strand RNA viruses of the genus Flavivirus, family Flaviviridae.
INTRODUCTION Dengue and dengue hemorrhagic fever (DHF) result from infection by any of four serotypes of dengue viruses. Transmission occurs through the bite ...
Dengue hemorrhagic fever (DHF): A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage (bleeding) and ...
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 ...