Dengue in Sao Tome and Principe

31 May 2022

Article: 56/2103

The World Health Organization (WHO) has reported the first-ever outbreak of dengue fever in Sao Tome and Principe, with 103 cases identified between 15 April and 17 May 2022. No deaths have been reported. 

Dengue is an infection found in tropical and sub-tropical climates worldwide. Dengue is spread by Aedes mosquito bites and can cause a severe flu-like illness. 

There is no vaccine against dengue fever licensed in the UK, with treatment being supportive only. 

Advice for travellers 

All travellers to endemic regions are potentially at risk of dengue fever and should be aware of this infection. Aedes mosquitoes are particularly persistent and aggressive, and bite between dawn and dusk. Prevention relies on avoiding mosquito bites at all times. 

Travellers developing a fever during or on return from travel are advised to seek medical attention as soon as possible. 

Information and advice for travellers on dengue fever is available on the TRAVAX (for health professionals) and fitfortravel (for the general public) websites. 

Sources: TRAVAX, 27 May 2022 and fitfortravel, 27 May 2022