* Dengue is a mosquito-borne viral disease.
* It is endemic in over 100 countries of Africa, America, Asia, and the Western Pacific.
* The causative agents are four closely related, but antigenically distinct, virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4) of the genus Flavivirus.
* Their principal vector is the mosquito Aedes aegypti.
* Dengue has two clinical forms:
dengue fever and
dengue hemorrhagic fever.
* The manifestations range from a nonspecific viral syndrome to severe and fatal hemorrhagic disease.
* There is no specific management for dengue infection:
* Vaccines remain commercially unavailable.
* Vector control is considered the only strategy for controlling the disease.
* A long-term community-based control project may not however, be feasible when a sudden onset of epidemics occurs in highly populated urban areas.
* In June 2002, a considerable number of cases of dengue fever/dengue hemorrhage fever were reported in South Taiwan.
* The government conducted a weeklong community-based cleanliness campaign.
* The study reported here evaluated the effectiveness of the campaign.
* The prevalence of dengue vectors was evaluated according to changes in the ovitrap index.
* This index significantly decreased, from 66.7 percent before the campaign to 39.3 percent three months later.
* Human knowledge and behavior were investigated by a...