Roughly a quarter of Ebola infections in eastern Congo are estimated to be going undetected or found too late, a World Health Organization (WHO) expert said on Thursday.
Some 2,025 cases and 1,357 deaths have been recorded since the epidemic began in August in the Democratic Republic of Congo's North Kivu and Ituri provinces, said Dr. Mike Ryan, executive director of WHO's Health Emergencies Program.
It is the second-worst outbreak of the virus on record.