Related Experiment Video

Updated: Apr 22, 2026

Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus
10:35

Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus

Published on: May 31, 2020

2.8K

Zika virus emergence in mosquitoes in southeastern Senegal, 2011

Diawo Diallo1, Amadou A Sall2, Cheikh T Diagne1

  • 1Unité d'Entomologie Médicale, Institut Pasteur de Dakar, Dakar, Sénégal.

Plos One
|October 14, 2014
PubMed
Abstract

Insights

Zika virus (ZIKV) amplified across southeastern Senegal in 2011, detected in multiple mosquito species across various land cover types, excluding indoor village locations. Aedes furcifer and Aedes vittatus were implicated as potential vectors for human transmission.

Area of Science:

  • Arbovirology
  • Medical Entomology
  • Epidemiology

Background:

  • Zika virus (ZIKV) is a flavivirus maintained in a zoonotic cycle involving mosquitoes and primates.
  • ZIKV amplifications occur in southeastern Senegal, but their spatio-temporal dynamics remain poorly understood.
  • A large ZIKV outbreak in French Polynesia highlights the need to study ZIKV dynamics in other regions.

Purpose of the Study:

  • To describe the spatio-temporal patterns of the 2011 ZIKV amplification in southeastern Senegal.
  • To identify mosquito species and land cover types associated with ZIKV circulation.

Main Methods:

  • Monthly mosquito collections were conducted from April to December 2011 across diverse land cover sites.
  • Mosquitoes were tested for ZIKV infection using virus isolation and RT-PCR.
  • Landing collections were performed by teams in forest, savannah, agriculture, and village environments.

Main Results:

  • ZIKV was detected in 31 of 1,700 mosquito pools (11,247 mosquitoes) across multiple species, including Aedes furcifer, Aedes luteocephalus, and Aedes africanus.
  • The virus was found in June, September, October, November, and December, across all land cover classes except indoor village locations.
  • ZIKV was detected in mosquitoes from only one of the ten investigated villages.

Conclusions:

  • The 2011 ZIKV amplification in Kédougou was widespread, involving several mosquito species as probable vectors.
  • All investigated land cover classes, except indoor village sites, were associated with ZIKV circulation.
  • Aedes furcifer males and Aedes vittatus, found infected within a village, are likely involved in human ZIKV transmission.

More Related Videos

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 106:18

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1

Published on: March 13, 2018

14.4K
Experimental Viral Infection in Adult Mosquitoes by Oral Feeding and Microinjection08:02

Experimental Viral Infection in Adult Mosquitoes by Oral Feeding and Microinjection

Published on: July 28, 2022

2.8K

Related Concept Videos

Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
52
Symbiosis00:58

Symbiosis

Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
27.4K