Dengue is a viral infection spread by mosquitoes.
It's widespread in many parts of the world. In most people the infection is mild and passes in
about a week without causing any lasting problems. But in rare cases it can be
very serious and potentially life threatening.
There is no specific treatment or widely available
vaccine for dengue, so it's important to try to avoid being bitten by
mosquitoes when visiting an area where the infection is found.