People infected simultaneously with dengue and chikungunya reported in Costa Rica

The viruses that cause dengue and chikungunya fever are present simultaneously in many tropical and semitropical countries and are transmitted by the same mosquito. If travellers do not take all necessary measures to avoid mosquito bites where dengue and chikungunya viruses are active, it is possible to have both diseases simultaneously. Authorities in Costa Rica have reported 2 sporadic cases with dual infections.

Since both diseases can cause serious illness, travellers can reduce their risk of exposure to these viruses by taking all necessary precautions to avoid mosquito bites. Many persons with these infections do not seek medical care and are not reported to health authorities. There may be many more cases in the community that are not reported.

Visit our Health Library for more information on exposure to and the prevention of Chikungunya Fever and Dengue Fever.