New Ebola outbreak in the Congo, 10 other cases suspected: Health officials

The World Health Organization declared the last outbreak to be over a year ago.

Alongside the two new cases in the north-western town of Bikoro, which were confirmed after laboratory analysis, there are believed to be another 10 cases, said Jean Jack Muyembe, who leads the national institute for biological research.

In a statement the WHO said that two out of five samples from five patients had tested positive for the virus at a health center in Kinshasa, but that more specimens are being collected for testing.

"Working with partners and responding early and in a coordinated way will be vital to containing this deadly disease," he added.

This is the ninth cycle of Ebola recorded in the DRC. The disease was discovered in 1976 and named after the eponymous Ebola River that cuts across the north of the country.

The disease is believed to be spread by bats, who can incubate the virus without being affected by it. The bats can then infect other animals living in the same trees, such as monkeys.

The virus is thought to spread to humans via infected bush meat.