Chapter I Background of the Study
Introduction
Cases of Dengue caused by insects especially mosquitoes are increasing year by year. Dengue is a disease caused by any 1 of 4 related dengue viruses. The viruses are transmitted to humans by the bite of an infected mosquito. There are 2 types of dengue, with dengue hemorrhagic fever being the more severe, and sometimes fatal, though much less common form of the infection. Dengue is endemic in at least 100 countries such as Asia, the Pacific. Dengue cannot be spread directly from person to person, so you can’t catch it from shaking hands, a sneeze, a doorknob or a toilet seat. Dengue is spread from person to person by the bite of an infected mosquito. The mosquito becomes infected with dengue virus when it bites a person who already has the dengue virus in their blood, typically in the time frame just before the infected person starts to have symptoms of the disease. About one week after biting an infected person, the mosquito can transmit the virus while biting a healthy person. A single infected mosquito can infect multiple people, who in turn can infect multiple mosquitoes — and the cycle continues. A bite from a female carrier mosquito can cause you fever, often as high as 104 - 105 degrees Fahrenheit, fatigue, headache, and swollen nymph nodes and might lead to death if it was not treated immediately. A total of 54,659 dengue cases were reported nationwide from January 1 to August 14, 2010, much higher than the recorded 31,248 cases in the same period in 2009. There were 429 deaths recorded in the last seven months and almost 80% of the cases recorded belonged to the 1-20 year old age bracket. This adds up to the problems of many families in the community since commercial wriggler inhibitor are of high cost. Dengue is a very prevalent disease in tropical areas, where frequent rains allows standing