What if I get ill after I return home?

If you become ill after you return home, consult your doctor and continue to protect yourself from mosquito bites if you are still in a dengue-endemic region. 

During the first week of infection, mosquitoes can spread the virus from you to other people and make them sick.1 

You can help protect them by protecting yourself.

Try to avoid any further mosquito bites:2

  • Use insect repellent regularly
  • Wear loose and protective clothing
  • Help keep mosquitoes out of the home with screens on windows and doors and a mosquito net around your bed
  • Use an insecticide spray or plug-in in your room
  • Regularly empty and clean anything that holds water to stop mosquitoes laying their eggs


Watch for warning signs 

Warning signs of severe dengue begin in the 1–2 days after the fever has gone.3 Severe dengue is an uncommon but potentially fatal complication that affects about 1 in 20 people with dengue.3

Warning signs of severe dengue include4:

  • Severe stomach pain
  • Persistent vomiting
  • Bleeding from gums
  • Feeling tired
  • Rapid breathing
  • Restlessness
  • Blood in vomit and stool

Severe dengue is an emergency. If you develop any of these warnings, go to a hospital immediately.3