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  1. Sep 26, 2019 · Information about how dengue can be spread; mosquito bite, mother to child, and through infected blood, laboratory or healthcare setting exposures

    • Key Facts
    • Febrile Phase
    • Warning Signs
    • Critical Phase
    • Convalescent Phase
    • Dengue During Pregnancy
    Dengue can range from asymptomatic infection or mild illness to severe disease.
    An estimated 1 in 4 dengue virus infections are symptomatic. Symptomatic dengue virus infection most commonly presents as a mild to moderate, nonspecific, acute febrile illness.
    Infection with one of the four dengue viruses will induce long-lived immunity for that specific virus.
    Because there are four dengue viruses, people can be infected with DENV multiple times in their life.
    Fever typically lasts 2–7 days and can be biphasic.
    Other signs and symptoms may include severe headache; retro-orbital eye pain; muscle, joint, and bone pain; macular or maculopapular rash; and minor hemorrhagic manifestations including petechia, e...
    Some patients have injected oropharynx and facial erythema in the first 24–48 hours after onset.

    Warning signs of progression to severe dengue occur in the late febrile phase around the time of defervescence, and include persistent vomiting, severe abdominal pain, fluid accumulation, mucosal bleeding, difficulty breathing, lethargy/restlessness, postural hypotension, liver enlargement, and progressive increase in hematocrit (i.e., hemoconcentr...

    The critical phase of dengue begins at defervescence and typically lasts 24–48 hours.
    Most patients clinically improve during this phase, but those with substantial plasma leakage can, within a few hours, develop severe dengue as a result of a marked increase in vascular permeability.
    Initially, physiologic compensatory mechanisms maintain adequate circulation, which narrows pulse pressure as diastolic blood pressure increases.
    Patients with severe plasma leakage may have pleural effusions, ascites, hypoproteinemia, or hemoconcentration.
    As plasma leakage subsides, the patient enters the convalescent phase and begins to reabsorb extravasated intravenous fluids and pleural and abdominal effusions.
    As a patient’s well-being improves, hemodynamic status stabilizes (although he or she may manifest bradycardia), and diuresis ensues. The patient’s hematocrit stabilizes or may fall because of the...
    The convalescent-phase rash may desquamate and be pruritic.
    Data are limited on health outcomes of dengue in pregnancy and effects of maternal infection on the developing fetus.
    Perinatal transmission can occur, and peripartum maternal infection may increase the likelihood of symptomatic infection in the newborn.
    Of 41 perinatal transmission cases described in the literature, all developed thrombocytopenia, most had evidence of plasma leakage evidenced by ascites or pleural effusions, and fever was absent i...
    Perinatally infected neonates typically become ill during the first week of life.
  2. Oct 5, 2022 · Dengue fever is caused by any one of four types of dengue viruses. You can't get dengue fever from being around an infected person. Instead, dengue fever is spread through mosquito bites. The two types of mosquitoes that most often spread the dengue viruses are common both in and around human lodgings.

  3. Apr 23, 2024 · Most people with dengue have mild or no symptoms and will get better in 1–2 weeks. Rarely, dengue can be severe and lead to death. If symptoms occur, they usually begin 4–10 days after infection and last for 2–7 days. Symptoms may include: high fever (40°C/104°F) severe headache. pain behind the eyes.

  4. Jun 6, 2022 · Health Library / Diseases & Conditions / Dengue Fever. Dengue fever is an illness spread by the bite of mosquitos infected with one of the dengue viruses. Symptoms are usually flu-like but can worsen to severe dengue (dengue hemorrhagic fever), a life-threatening condition. Getting infected a second time increases your risk of serious symptoms.

  5. Nov 14, 2022 · The three phases of dengue include febrile, critical, and recovery. During the febrile phase, a sudden high-grade fever of approximately 40 C occurs that usually lasts two to seven days. Saddleback or biphasic fever is seen in approximately 6% of cases, particularly in patients with DHF and severe dengue.

  6. Dec 15, 2021 · Introduction. Dengue regards one of the utmost serious arboviral infections around the world. dengue virus (DENV) is transmitted through bites of female Aedes mosquitos especially Aedes (Stegomyia) aegypti, Ae. alpopictus [ 1 ], Ae. niveus, and Ae. polynesiensis [ 2 ].

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