Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational
Official Title: Descriptive and Prognostic Study of Arbovirus Infections in France, Based on a Hospital Cohort of Children and Adults With Suspected Arbovirose.r
Brief Summary:
Arbovirus is term used to refer to a group of viruses that are transmitted by blood-feeding arthropods. The word arbovirus is an acronym (Arthropod-Borne virus). There are hundred which have been shown to cause disease in humans. The incubation period is short usually limited between 1 and 15 days. Among case in which symptoms do appear, the most common clinical features of infection are 4: algo-eruptive (dengue, chikungunya, Zika virus disease...), hemorrhagic fever (dengue, yellow fever, Crimean-Congo hemorrhagic fever), neurological (West Nile virus disease, Zika virus disease, Japanese encephalitis.) or arthritic afflictions, (Chikungunya, O'nyong nyong…).
Dengue is a mosquito-born viral disease caused by four different serotypes of dengue virus (DENV). Dengue fever (DF) is defined by the sudden onset of fever associated with non specific constitutional symptoms, recovery occurring spontaneously after three to seven days.
The infection can sometimes progress to dengue hemorrhagic fever (DHF), a disease characterized by a transient increase in vascular permeability provoking a plasma leakage syndrome. DHF can be complicated by shock and internal hemorrhage. Other rarer but potentially life-threatening complications include encephalitis, hepatitis, rhabdomyolysis, and myocarditis.
There is currently no way of predicting the outcome of DF or DHF, and the World Health Organisation (WHO) classification lacks sufficient sensitivity and specificity to recognize and guide the management of severe forms of dengue. The pathophysiology of these severe forms is also poorly known, but it involves both host characteristics (immunological facilitation in case of new infection by a different serotype, and genetic factors), and viral factors.