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Dengue Fever: Mosquito Born Illness Now Found In Texas, Florida, And Hawaii

Asian tiger mosquito, Aedes albopictsDengue fever is a viral (flavivrus) disease transmitted by Aedes albopictus and female A. aegypti mosquitoes. It is estimated that 50 to 100 million people in more than 100 countries are infected each year with dengue viruses.

There are four different types of dengue virus, and there is no cross-immunity, so a person may be stricken with dengue fever four times in his life. The most active feeding times for dengue vector mosquitoes is for a few hours after daybreak and in the afternoon for a few hours just after dark (dusk).

As opposed to the night-feeding mosquitoes that transmit malaria, these species tend to be “urban,” may also feed during daylight hours (also indoors, in the shade, and during overcast weather), and are known to bite below the waist. Dengue fever is seen chiefly in the Caribbean and South America, as well as other tropical and semitropical areas, such as Southeast Asia, Africa, and Mexico. In the United States, cases have been noted in Texas, Hawaii and Florida. The larvae flourish in artificial water containers (e.g., vases, tires), often in a domestic environment.

The incubation period following a mosquito bite is two to eight days. The disease is self-limited (five to seven days) and characterized in older children and adults by a sudden onset of symptoms, including: Read more »

This post, Dengue Fever: Mosquito Born Illness Now Found In Texas, Florida, And Hawaii, was originally published on by Paul Auerbach, M.D..

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