ABSTRACT
Insect bites cause many more deaths in the world than animal bites. According to the World Health Organization [1], an estimated 50 million dengue infections occur worldwide every year. Dengue hemorrhagic fever (DHF), the more serious form of the viral disease transmitted by the bite of the infected mosquito, Aedes aegypti, can cause bleeding and shock, leading to death. In 2007 in the Americas alone, there were 890,000 reported cases of dengue, of which 26,000 cases were DHF. Malaria, on the other hand, is caused by a microscopic parasite (protozoa) transmitted from person to person by the female anopheline mosquito. Over one million deaths each year result from 300 million acute cases of malaria.
