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Vectors of Dengue

Slide 8

May 2012

Let us now turn our attention to the very important discussion of the mosquito vectors for the dengue virus.

Aedes aegypti is the primary vector associated with transmission of dengue – you can see the lyre-shaped dorsal pattern on the thorax of the mosquito, and silver bands on the legs.

This is a day biter, and preferentially feeds on humans, which makes it more likely to transmit dengue. It likes to both rest and feed indoors.

This species survives in the 50 degree Fahrenheit band; basically Mexico to Southern Brazil, but it can also survive where human conditions allow, thus is not solely dependent on climate. Aedes aegypti has historically persisted in Memphis, Tennessee, which was also the site of a major epidemic of yellow fever, another flavivirus, in the late 1800s.

Vectors of Dengue
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