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About how dengue spreads through mosquito bites and other routes. Dengue Learn about dengue viruses, how dengue spreads, how to prevent dengue, and the areas with risk of dengue.
Symptoms. The most common symptom of dengue is fever with any of the following: Aches and pains (eye pain, typically behind the eyes, muscle, joint, or bone pain) Nausea, vomiting. Rash. Any warning sign. Common symptoms of dengue.
Key points. Dengue viruses are spread to people through mosquito bites. A person can be infected with dengue multiple times in their life. Each year, up to 400 million people are infected by a dengue virus.
All four dengue viruses are spread to people primarily through the bite of an infected Aedes species mosquito. A dengue vaccine is recommended for U.S. territories and freely associated states. Protect yourself from dengue by avoiding mosquito bites.
Dengue is a viral disease that can cause severe illness in some people. Reported dengue cases have doubled in 2024. It's spread by mosquitoes, so protect yourself by preventing insect bites and dumping out standing water where mosquitoes lay eggs.
The vaccine prevents dengue caused by all four dengue virus serotypes. Since 2022, Dengvaxia has been available for use in children and adolescents 9–16 years old who have laboratory-confirmed previous dengue virus infection and are living in an area where dengue is endemic.
Dengue viruses are usually spread to people through the bites of infected Aedes species mosquitoes. A person infected with dengue during pregnancy can pass the virus to their fetus. Rarely, dengue can be spread through other routes.
Dengue is defined by a combination of ≥2 clinical findings in a febrile person who lives in or traveled to (in the last 14 days) a dengue-endemic area. Clinical findings include nausea, vomiting, rash, aches and pains, a positive tourniquet test, leukopenia, or any warning sign.
A rising health threat. CDC supports laboratory testing and research to help identify and prevent dengue. Dengue cases have risen at an alarming rate in recent years. In 2023, there were more than 5 million cases reported from 80 countries, with at least 23 countries reporting dengue outbreaks.
Clinicians should consider dengue in patients with fever, who live in or recently traveled to areas with risk of dengue. In addition to fever, common dengue symptoms include severe headache, retro-orbital pain, myalgia and arthralgia, macular or maculopapular rash.