A fresh outbreak of the deadly Ebola virus has flared up in Congo, a country that was already contending with the world’s largest measles epidemic, as well as the coronavirus.

Congo’s health ministry said that the new Ebola outbreak has killed four people, and infected at least two more, in Mbandaka, a city of 1.2 million people on the country’s western side. A fifth person died on Monday, according to UNICEF, the United Nations agency for children.

Less than two months ago, Congo was about to declare an official end to an Ebola epidemic on the eastern side of the country that had lasted nearly two years and killed more than 2 275 people. Then, with just two days to go, a new case was found, and the outbreak could not be declared over. But officials say it is in its final stages.