Story highlights Two of the cases reported since Tuesday are confirmed as Ebola

27 total cases of fever with hemorrhagic symptoms have been reported since April

(CNN) Eleven new cases of hemorrhagic fever, including one death, have been reported since Tuesday in the Democratic Republic of Congo, Minister of Health Dr. Oly Ilunga said Thursday in Kinshasa. Two of those cases are confirmed to be Ebola. Lab results are pending on the other nine cases which are suspected to be Ebola.

Ebola virus disease, which most commonly affects people and nonhuman primates such as monkeys, gorillas and chimpanzees, is caused by one of five Ebola viruses. On average, about 50% of people who become ill with Ebola die.

The new outbreak was announced Tuesday. Sickness is occurring in the Bikoro health zone, 400 kilometers (about 250 miles) from Mbandaka, the capital of Equator province.

The World Health Organization reported Thursday that 27 total cases of fever with hemorrhagic symptoms were recorded in the Bikoro region between April 4 and May 5, including 17 deaths. Of these total cases, two tested positive for Ebola virus disease, according to the WHO.

The risk to public health is assessed as high at the local level, moderate at the regional level and low at the global level, according to the WHO.

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