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Updated: Aug 13, 2026

Protocol for Dengue Infections in Mosquitoes A. aegypti and Infection Phenotype Determination
Published on: July 4, 2007
First introduction of dengue virus type 3 in Niger, 2022
Adamou Lagare1, Martin Faye2, Gbaguidi Fintan3
1Centre de Recherche Médicale et Sanitaire (CERMES), 634 Bd de la Nation, Niamey, YN034, Niger.
Abstract:
Dengue fever is the most important mosquito-borne viral disease of humans, with a significant disease burden in tropical and subtropical countries. The disease is caused by four distinct dengue virus (DENV) serotypes, DENV-1 to -4, all of which belong to the family Flaviviridae, genus Flavivirus. Approximately 3.6 billion people live in areas where they are at risk of transmission of DENVs, resulting in up to 390 million infections and 96 million symptomatic cases annually. Although the disease is highly endemic in the West Africa region, little is known about the prevalence and distribution of DENVs in Niger. We hereby report the first laboratory-confirmed case of dengue in Niger.
Insights
Dengue fever, a mosquito-borne viral illness, poses a significant global health threat. This study reports the first confirmed dengue virus case in Niger, highlighting a critical knowledge gap in West Africa.
Area of Science:
- Medical Entomology
- Virology
- Epidemiology
Background:
- Dengue virus (DENV) is a major mosquito-borne viral disease, endemic in tropical and subtropical regions.
- Four DENV serotypes (DENV-1 to -4) cause significant global morbidity and mortality, affecting billions.
- DENV transmission is prevalent in West Africa, yet data on its distribution in Niger is scarce.
Observation:
- This study investigated the presence and prevalence of dengue virus in Niger.
- The research involved laboratory confirmation of dengue cases.
Findings:
- The first laboratory-confirmed case of dengue fever in Niger is reported.
- This finding establishes the presence of dengue virus in Niger.
Implications:
- This discovery underscores the need for enhanced surveillance and control strategies for dengue in Niger.
- Further research is crucial to understand DENV epidemiology and distribution in the region.
- Public health interventions may be required to mitigate potential outbreaks in Niger.
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