How are dengue viruses transmitted?

Updated: May 03, 2019
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Dengue viruses are transmitted by the bite of an infected female Aedes (subgenus Stegomyia) mosquito. [18] Both males and females require nectar for energy. Females require a blood meal as a source of appropriate protein for egg development. Globally, Aedes aegypti is the predominant highly efficient mosquito vector for dengue infection, but the Asian tiger mosquito, Aedes albopictus, and other Aedes species can also transmit dengue with varying degrees of efficiency (see the images below).

Drawing of Aedes aegypti mosquito. Courtesy of the Drawing of Aedes aegypti mosquito. Courtesy of the Centers for Disease Control and Prevention (CDC).
Aedes albopictus. Courtesy of the Centers for Dise Aedes albopictus. Courtesy of the Centers for Disease Control and Prevention (CDC).
Aedes aegypti mosquito. Courtesy of Wikimedia Comm Aedes aegypti mosquito. Courtesy of Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Aedes_aegypti.jpg; author Muhammad Mahdi Karim).

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