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[Dengue outbreak by virus type 4 in French Polynesia. I. General epidemiology - clinical specific aspects (author's
Abstract:
Authors describe an extensive outbreak of dengue 4 virus which is observed for the first time out of its Asian original focus. The whole archipelagos of French Polynesia have been contaminated in a space of four months. Usual form of the disease is typical with lightness of the symptoms. This outbreak has been implicated in the death of a child by shock; and two cases of reversible encephalitis have been certainly caused by this virus. The neurotropism is the main characteristic of dengue virus type 4.
Insights
An extensive dengue 4 virus outbreak occurred in French Polynesia, marking its first appearance outside Asia. While typically mild, this dengue virus type 4 outbreak caused a child’s death and two cases of reversible encephalitis.
Area of Science:
- Virology
- Epidemiology
- Infectious Diseases
Context:
- First documented outbreak of dengue 4 virus outside its native Asian focus.
- Rapid dissemination across French Polynesia's archipelagos within four months.
Purpose:
- To document and characterize an extensive outbreak of dengue 4 virus in French Polynesia.
- To investigate the clinical manifestations and neurological complications associated with this dengue virus type 4 strain.
Summary:
- The outbreak primarily presented with typical, mild dengue symptoms.
- However, severe cases included one pediatric death from shock and two instances of reversible encephalitis.
- Neurotropism was identified as a key characteristic of this dengue virus type 4 strain.
Impact:
- Highlights the potential for rapid geographic spread of dengue virus serotypes.
- Underscores the neurotropic potential of dengue virus type 4, even in typically mild outbreaks.
- Emphasizes the need for enhanced surveillance and preparedness for emerging infectious diseases in vulnerable regions.