The woman may have had a link to another person, who was married to an Ebola survivor and who died a few days previously in Democratic Republic of Congo.

The recent cases come just as Democratic Republic of Congo was set to declare the outbreak’s end.

REGN-EB3 and mAb114 reduced mortality in a clinical trial carried out during the ongoing outbreak in Democratic Republic of Congo.

Deaths attributed to the disease have outpaced those from Ebola this year.

The announcement comes as the country prepares for possible spread of the virus from Democratic Republic of Congo.

The cases, which spread from the outbreak in the DRC, include a five-year-old boy who died.

More than 1,100 people have died in the current Ebola outbreak in Democratic Republic of Congo that started in August 2018.

The person, whose identity has not been revealed, may have been exposed to the virus in Democratic Republic of Congo and is now at the University of Nebraska Medical Center.

The study will examine the efficacy of four drugs—an antiviral and three monoclonal antibodies—that are already being used to treat patients in Democratic Republic of Congo.