The aggressive Ebola epidemic, which triggered global alerts between 2013 and 2016, was the most widespread outbreak of the virus, killing more than 11,300 people and infecting almost 30,000 others.
"The team is working with the national authorities and other global organisations to assess the situation and to ensure that the outbreak is contained".
Health officials in Congo, where Ebola was discovered in the 1970s, confirmed the outbreak of the disease on Tuesday.
Two out of five samples collected tested positive for a Zaire strain of Ebola at the Institut National de Recherche Biomédicale in Kinshasa.
"According to our early information, the cases have been reported since December and the first deaths were reported in January, but the link between the deaths and the epidemic has not yet been established", WHO Congo spokesman Eugene Kabambi told Reuters.
This is the ninth Ebola outbreak in Congo since 1976, when the deadly disease was first identified. The medical department in the country is primarily dependent on the support from the WHO and other health partners for its emergency response.
A health worker sprays a colleague with disinfectant during a training session for Congolese health workers to deal with the Ebola virus in Kinshasa on October 21, 2014.
The Eagles will play Congo DR in a farewell match before they will travel to Wembley to play England and then Austria to take on the Czech Republic before landing in Russian Federation for the World Cup.
Neighbouring countries have been alerted about the new outbreak.
The outbreak declaration was made after laboratory results confirmed two cases of Ebola out of a sample of five suspected patients, World Health Organization said.
"One of the defining features of this epidemic is the fact that three health professionals have been affected", Ilunga said in a statement.
The preventive measures include handling potentially infected bushmeat only while wearing protective clothing and by thoroughly cooking it before eating it.
About 20 people have been confirmed dead, and across Africa, countries are trying to prevent the deadly virus from spreading.