One man has died from the disease and authorities are looking at other possible cases.
CASIMIRO DE ABREU, Brazil — This small city in the state of Rio de Janeiro is on high alert after authorities confirmed the death of one man by yellow fever and said they were investigating several other possible cases.
Health authorities this week confirmed that 38-year-old Watila Santos died from the illness on March 11.
A neighbor of Santos, Alessandro Valenca Couto, was infected and sent for treatment to a hospital in the city of Rio de Janeiro, where he is recovering.
Authorities are investigating more possible cases involving four relatives of Santos, including a 13-year-old and a 9-year-old.
In the city center and rural areas of Casimiro de Abreu,…