GENEVA, May 25 (Xinhua) -- The World Health Organization (WHO) revealed on Monday that a rapidly spreading Ebola outbreak in the Democratic Republic of the Congo (DRC) has caused 220 suspected deaths, as health officials struggle to catch up with the epidemic.

While 101 confirmed cases and 10 confirmed deaths have been recorded, WHO chief Tedros Adhanom Ghebreyesus said the true scale is far larger. "There are now more than 900 suspected cases and 220 suspected deaths," Tedros said at the Virtual Ministerial Briefing on the Bundibugyo Ebola Outbreak on Monday.

The outbreak, declared as a public health emergency of international concern on May 17, has also spread to Uganda, which has five confirmed cases and one death.

Tedros highlighted a critical challenge: the delay in detecting the outbreak means that health teams are now playing catch-up with a very fast-moving epidemic."We are urgently scaling up operations, but at the moment, the epidemic is outpacing us," he said.

The Ebola strain involved is Bundibugyo virus, for which no approved vaccines or therapeutics exist. Previous outbreaks of this strain occurred only twice - in Uganda (2007) and DRC (2012). WHO has recommended prioritizing two monoclonal antibodies for clinical trials.

Compounding the crisis, the affected provinces of Ituri and North Kivu are plagued by intense insecurity and community distrust. Recent months have seen intensified fighting displacing over 100,000 people, along with two security incidents at health facilities last week.

WHO has raised its national risk assessment to "very high," while regional risk remains "high" and global risk "low." Neighboring countries are urged to take immediate action.

Tedros is set to travel to DRC with WHO's emergencies director, as the agency commits to stopping the outbreak. "It will get worse before it gets better," he admitted. "But we know this virus, and we know how to stop it." ■