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 Russia.
In 2006, of 3168cases of dengue fever (DF)/hemorrhagic dengue fever (DHF) admitted and there were 256 cases of DHF and seven dengue-associated deaths (case-fatality rate 6.3%.