In addition to extending the geographic
range of these vectors, the development of
the mosquito larvae is faster in warmer climates,
resulting in the mosquitoes becoming
adults sooner. Also, the extrinsic incubation
periods of yellow fever and dengue viruses in
the mosquito vectors are dependent on temperature
(4). With warmer temperatures, the
incubation time required from when the
mosquito first encounters an infected host
until the mosquito is able to transmit an
infectious virus may be shortened.