Cholera cases have soared in the Democratic Republic of Congo in recent weeks, the UN said on Friday, bringing the number of people infected in the year-long outbreak to 22,000 with 584 deaths.
Aid agencies have been trying to halt the spread of the water-borne disease that has ravaged eight of the country's 11 provinces since January 2011.
"There has been a spike in cases" since mid-December, with figures on the rise in the capital Kinshasa in particular, the UN Office for the Coordination of Humanitarian Affairs (OCHA) said.