When we all thought Ebola was forever gone in Africa, it reared its ugly head yet again.

Four more cases of Ebola have been detected in northwest Democratic Republic of Congo, doctors said Thursday, two days after DRC reported a fresh outbreak of the disease.

Of the four affected people, two are caregivers at the hospital in Bikoro where the Ebola outbreak has been concentrated, the hospital’s chief surgeon Serge Ngalebato told AFP.

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The latest Ebola outbreak in the region northest of Kinshasa near the border with the Republic of Congo has so far killed 17 people.

The World Health Organization has made $1 million (842,000 euros) available to stop the virus from spreading to other provinces and countries, a representative of the UN’s humanitarian affairs agency OCHA told reporters.

The Nigerian government on Wednesday said it was acting to prevent the spread of Ebola from the vast Central African country.

The federal government had put in place an emergency programme to monitor all border activity to keep Nigerians safe, Health Minister Isaac Adewole said after a cabinet meeting.