The U.S. Centers for Disease Control and Prevention issued a travel notice on Tuesday for the entire South American continent due to elevated levels of yellow fever in several countries.
“An increased number of cases of yellow fever have been reported in parts of South America,” the CDC said in its bulletin, referring to a report from the Pan American Health Organization, an arm of the World Health Organization (WHO), that showed that cases of the viral disease have increased during the first three months of 2025.
Yellow fever is a viral illness transmitted by mosquitoes. It is primarily found in tropical areas and spawned numerous epidemics worldwide in the 18th and 19th centuries….