Dengue is a viral infection spread by mosquitoes which mainly feed during daytime hours. It causes a flu-like illness, which can occasionally develop into a more serious life-threatening illness. Severe dengue is rare in travellers.

The mosquitoes that spread dengue are more common in towns, cities and surrounding areas.

Vaccination can be considered for individuals aged 4 years of age and older who have had dengue infection in the past and who are:

Travelling to areas where there is a risk of dengue infection or areas with an ongoing outbreak of dengue, or
are exposed to dengue virus through their work, such as laboratory staff working with the virus