India, May 23 -- The World Health Organisation upgraded its risk assessment of the Ebola virus in Congo, saying the outbreak now poses a "very high" risk. This was raised from the earlier categorisation of "high".

While the health agency has said that the chances of the global spread of the disease remain low, the virus, specifically its Bundibugyo strain, has now spread undetected for weeks in Congo's Ituri Province, the Associated Press reported.

Global health authorities are making efforts to identify the medical options to help contain this outbreak, with there being no approved vaccines or treatments for the Bundibugyo strain, as opposed to the more common Zaire strain.

The Bundibugyo virus has a fatality rate of up to 40%, Reuter...