Dengue fever is widespread in Brazil
With more than 1,320,000 reported cases of dengue fever, nearly every state is struggling to control this infection. There have been 600 deaths, two-thirds of whom have occurred in the state of São Paulo. All 4 strains of this virus are being transmitted in various parts of the country.
All travellers to areas where the dengue fever virus is active can reduce their risk of exposure by taking all necessary precautions to avoid mosquito bites. Many persons with dengue fever do not seek medical care and are not reported to health authorities. There may be many more cases in the community than the reports indicate.