Health authorities in La Libertad have warned of an outbreak of the bubonic plague in the province of Ascope – about an hour away from the city of Trujillo.
Authorities issued an alert a week after two adults and one child were confirmed to have been infected with the disease.
The bubonic plague is a disease that is mainly carried by small rodents and their fleas. Left untreated, the plague has a mortality rate of about two thirds.
However, the bubonic plague can be effectively treated with several classes of antibiotics.
Henry Rebaza, a local health official, said those infected were suffering from fever, headaches, and extreme exhaustion, among other symptoms, El Comercio reported.
The province of Ascope, Rebaza said, was currently cleaning solid waste from the region, in order to ensure the eradication of rats.
"If we eliminate solid waste there will be no rats, if there are no rats there are no fleas, and without fleas there is no reason to worry about the plague,” Rebaza said.
In 2010 Ascope was also home to an outbreak of the bubonic plague, which left one person dead, and some 30 infected.
The bubonic plague is generally though to have been responsible for The Black Death that struck Europe in the 14th century, when nearly a third of the human population died.