alaria, dengue fever and yellow fever are some diseases that are likely to spread with warmer air temperature.
A 3°C warming in the United States could increase the range of Aedes aegypti, a mosquito species that can carry the viruses' dengue, yellow fever and malaria. Freezing temperatures kills aedes aegypti. At latitudes farther north than Memphis Tennessee, for example, this mosquito is present only during the summer (2). A 3° warming could increase the areas in which Aedes aegypti would be present during more of the year. However, in places where the mosquito is present year-around, the mosquito may become more active.
Aedes aegypti tend to breed in just about anything: bottle caps, plastic wrappers, tire dumps, and other fresh water containers that people leave standing. The habitats we create are perfect for them, and are hard to get to for control efforts.
Dengue fever is "a tropical disease caused by a virus that is transmitted by mosquitoes and marked by high fever, rash, headache, and severe muscle and joint pains."(8) Mosquitoes transmit dengue viruses. The virus replicates in the mosquito, a process that takes one to two weeks from the time a mosquito imbibes infected human blood until the virus reaches the salivary gland of the mosquito and replicates to titer high enough to be transmitted. This incubation period in the mosquito is shorter if the atmosphere temperature is warmer.
The dengue virus is distributed wher
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