Authorities in eastern Democratic Republic of Congo are searching for a six-year-old Ebola patient and her mother after armed men stormed the hospital where they were being treated.

The child was taken from Wanamahika Hospital, in the city of Butembo, by "very angry" men with knives, local health official Dr Lubambo Maboko Gaston said in a statement.

It is unclear whether the men were known to the child, but suspicion and fear surrounding Ebola treatment centres have been rife during the current outbreak.

In an interview with the Reuters news agency, Gaston urged the child and her mother to go to a health centre, as they risked "worsening their health" and "infecting their relatives".

Ebola treatment facilities have come under attack multiple times during the ongoing outbreak, in which almost 200 deaths and 840 cases have been confirmed.

The body of a dead Ebola victim is highly infectious and can lead to the virus spreading further when prepared for burial.

"People are not properly informed or sensitised about what is happening. For a certain segment of the population, especially in remote areas, Ebola is an invention by outsiders - it does not exist," local politician Luc Malembe Malembe told the BBC last month.

"They believe it is the NGOs and hospitals creating this to make money, and this is tragic."

The outbreak has been caused by a rare species of Ebola known as Bundibugyo. There is currently no vaccine for this species and the World Health Organisation has said it could take months for a jab to be ready.

Cases are currently concentrated in the provinces of Ituri, South Kivu and North Kivu, where the six-year-old girl was taken from the hospital on Monday.

Ituri remains the main centre of transmission.

More about the Ebola outbreak in DR Congo: