Dengue hemorrhagic fever is a severe, potentially deadly infection spread by some mosquitos. The dengue virus is transmitted by mosquitoes. Symptoms of Dengue hemorrhagic fever are fever that lasts from 2 to 7 days, Vomiting blood, Drowsiness, Bleeding from nose or gums.
Dengue hemorrhagic fever is caused by a virus for which there is no known cure or vaccine. Only treatment is to treat the symptoms, helping body to heal naturally. Major Research to cure the disease various researches includes means of vector control, vaccine development, and antiviral drugs are going on in Switzerland.
World Health Organization (WHO) has increased dramatically in recent years. For the period 2000–2004, the annual average was 925,896 cases, almost double the figure of 479,848 cases that was reported for the period 1990–1999 that is a large outbreak of dengue involving >17,000 cases was documented in the 2009.