Dengue is associated with poorer tropical third world countries. Leaders in Thailand warned his countrymen of the dengue epidemic that took the lives of six Thais and infected 6000 more. the Cambodian government felt it only right to focus on prevention instead of a cure. Cambodia has one of the most numbers of people infected by the Dengue fever. The Dengue prevention organization also believes that educational programs are not prioritized seeing that resources to implement them are not evaluated on a regular basis. , Dengue casualties were reduced significantly with the advent of vaccines and anti-biotic along with deadly viruses such as smallpox, poliomyelitis, and acute rheumatic fever. The World Health Organization stated that since 1998, infectious and parasitic diseases killed one-third of all deaths in the world in 1997.