Editor's note: This is a developing story and will be updated as new information emerges.

An unidentified, flu-like illness has killed dozens of people in the Democratic Republic of the Congo (DRC), according to news reports.

The deaths were reported in the Kwango province, which is located in the southwestern portion of the country and shares a border with Angola to the south. Between Nov. 10 and Nov. 25, between 67 and 143 people died of the mystery illness in what's known as the Panzi health zone within the province, Rémy Saki, the deputy provincial governor, told The Associated Press (AP).

"A team of epidemiological experts is expected in the region to take samples and identify the problem," Saki said.

According to reports, symptoms of the mystery illness are similar to the flu and include high fever, headaches and a cough.

The number of affected people is continuing to rise, but in general, treatments in the region are lacking, civil society leader Cephorien Manzanza told Reuters. "Panzi is a rural health zone, so there is a problem with the supply of medicines," Manzanza said. Reports don't note what kinds of treatments might be helpful for treating those affected.

Related: How do people die of the flu?

A spokesperson for the World Health Organization (WHO) told Reuters that the agency was alerted to the illnesses last week and that it's working with local authorities to investigate. WHO currently has a team on the ground collecting samples for analysis, an anonymous WHO employee told the AP.

Apollinaire Yumba, the provincial health minister, told the AP that officials are advising the public to exercise caution and refrain from contact with dead bodies to avoid potential infection.

Meanwhile, the DRC is also contending with a major mpox outbreak, which was declared a public health emergency of international concern in August. In early November, the total number of suspected mpox cases across the continent of Africa topped 50,000, with the DRC bearing a high percentage of those cases.

As of Dec. 1, 20 African countries have reported 13,081 mpox cases confirmed by laboratory tests, including 55 deaths from the disease, the WHO reported. The DRC has the most confirmed cases, at 9,513, followed by Burundi with 2,334 and Uganda with 716. A significant number of cases that are "clinically compatible with mpox" have not been officially confirmed due to a lack of tests, the WHO noted.

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