Dengue fever

Last updated: 26 Aug 2021

Dengue fever is a growing problem.

Do you know if your people are at risk?

Dengue or a "break-bone" fever is a  viral disease found in most tropical and sub-tropical places in the world. It is transmitted by the Aedes mosquito. Some people have no symptoms. In others, symptoms come on suddenly and include high fever, severe headaches, severe eye pain, joint pain, muscle and/or bone pain and mild bleeding (e.g. bleeding from the nose or gums or easy bruising). A rash often follows. The acute illness can last up to ten days, but complete recovery can take two to four weeks.

There are an estimated 390 million cases of dengue fever each year with an increasing number of international assignees being infected. As businesses continue to expand leading to the urbanisation of previous rural areas, dengue has become a risk for employees working in tropical climates. About 50% of population of the world's is at risk of dengue.


If you have any health concerns or questions about dengue please speak to your doctor



International SOS can provide specific advice and support for health and security risks, no matter where your people are. Our specialist teams are working to keep your workforce protected and business moving.

  • Assess and understand the risks of exposure at your destination: We analyse and evaluate any location you are sending your workforce to and recommend measures that help mitigate risks.
  • Educate your assignees before they depart: Through our specialist health information and education programmes, we help you to prepare your assignees for the local situation as well as advise on measures to take should the situation deteriorate.
  • Around the clock access for your assignees to specific local advice: Our qualified medical professionals and security specialists are there for your workforce, no matter what, where or when.
  • Stay connected with your assignees and keep track of them in a high risk location: We make sure your assignees receive the latest information and are prepared at all times.



Subscribers can log into the Country Guides to read about the dengue risk in a particular country. Subscribe to email alerts for updates on outbreaks.