Dengue fever is a common mosquito-borne illness in many tropical and subtropical countries. One study estimated that 50 million infections occur every year. Symptoms can be mild and include:
- muscle and joint pain
Mosquitoes become infected with the dengue virus when they bite infected people, and then spread it when they bite another person. Most cases of the dengue virus are caused when a mosquito bites someone, but you can get the virus if you are exposed to infected blood.
Dengue virus rarely causes death. However, the infection can progress into a more serious condition known as severe dengue or dengue hemorrhagic fever.
Symptoms of dengue hemorrhagic fever include:
- bleeding under the skin
- frequent vomiting
- abdominal pain
The more severe symptoms of dengue hemorrhagic fever often develop after you start to recover from the dengue virus.