The disease can be severe and deaths occur, but rarely. Antibiotics are indicated in more severe cases but antibiotic resistence occurs. Yellow Fever in Brazil. The WHO reports that 61 cases of suspected yellow fever have occured in Brazil since the beginning of 2000. Five of these have been confirmed and many others are pending confirmation.
Yellow fever is endemic is large portions of Brazil.
It is transmitted by mosquito bites and the disease ranges in severity from inapparent to fatal. Mild disease is marked by a non-specific fever while more severe disease includes high fever, chills, headache, backache, muscle aches and vomiting. If you are traveling to Brazil and then on to other countries, you may be required to prove that you have received the vaccine by producing a valid International Certificate of Vaccination. Travelers can also avoid infection by taking precautions against mosquito bites while traveling in areas where transmission occurs. The mosquitoes that spread the disease generally feed during the day, both indoors and outdoors.