People attend the wake of Oscar Toledo, who allegedly died of yellow fever, in San Lorenzo, Paraguay, on Monday. Seven people have died of the illness in Paraguay. FACTS ABOUT YELLOW FEVER -Transmitted to humans via infected mosquitoes - Occurs in tropical regions of Africa and parts of South America - Last epidemic in North America was in New Orleans in 1905 - Illness ranges in severity from mild to life-threatening. Symptoms of severe infection include fever, chills, headache and vomiting. Potential liver failure causes jaundice - yellowing of the skin and eyes - hence, the name. - Mortality rate for severe version of the illness ranges from 15% to more than 50%. Source: Centers for Disease Control and Prevention Digg del.icio.us Newsvine Reddit FacebookWhat's this?ASUNCION, Paraguay (AP)