This photograph taken on January 29, 2021 shows a sign of the World Health Organization (WHO) at the entrance of their headquarters in Geneva. (Photo: AFP)

The World Health Organization said Sunday it had received reports of two suspected cases of Ebola in Guinea, as the country reeled from the first resurgence of the disease in five years.

"WHO has been informed of two suspected cases of Ebola in Guinea-Conakry," the UN health agency's chief Tedros Adhanom Ghebreyesus said in a tweet, adding that "confirmatory testing" was underway.