In Liberia, a West African country that declared itself free of Ebola seven weeks ago, a 17-year-old male in the city of Nidonwin was found dead from the virus.

Authorities are now busy trying to figure out how many people the victim, who died on Sunday, might have been in contact with during the week he was ill.

Tolbert Nyenswah, who heads up Liberia's Ebola response, said that victim’s mother, father and siblings have all been placed under quarantine. "There is no need for panic. There is no need for fear. We have it under control," said Nyenswah as reported in CNN.

Nevertheless, the U.S. Centers for Disease Control has already sent a rapid response team to "investigating the circumstances around the case."

Tom Skinner, a spokesman for the agency, said: "It's possible we might see other cases, and we're moving as quickly as possible to identify all the contacts to make sure they're carefully monitored."

The World Health Organization declared Liberia free of Ebola on May 9, so it is not known how the young man, who lived near the Liberian airport, contracted the disease.

Nyenswah, speaking with the BBC said that authorities were dealing with the situation effectively and that this recurrence of the virus was not a total surprise. "We have said over and over again that there was a possibility that there could be a resurgence of the virus in Liberia," said Nyenswah, while adding that "our surveillance team, our capacity is very strong.”

Tarik Jasarevic, a spokesman for the World Health Organization said that his organization has a team in Liberia supporting the Ministry of Health, and because of this "there is the capacity to quickly identify, isolate, treat and track every contact and stop further the spread of the disease."

Nyenswah explained that the health ministry expects to have a list of the young man's contacts by Tuesday evening, adding that "This is a setback, but we have the capacity to move ahead and contain this."