The World Health Organization (WHO) aims to reduce the mortality rate and the morbidity rate of Dengue Fever's down to at least 50% and 25% respectively by 2020 because during the period of the past 50 years, the incidence of hemorrhagic fever around the world increased to more than 30 times estimated that each year with dengue infection worldwide, 50 – 100 million users and nearly half of the population lived in countries around the world, a local outbreak of dengue fever. Although the company Sanofi Pasteur aims in dengue vaccine production in order to achieve the goals. Health Organization (who). But the opinion of Professor Lee Kong Chian Wilder-Smith from Annelies of Nanyang Technological University School Medicine, country Singapore. Said that "The vaccination for dengue, which has a successful first type is treated as a new era begins in controlling dengue disease."