By Tim Cocks | Nov 15, 2012 09:22 AM EST
Doctors Without Borders said Nigeria had failed to deliver on promises to tackle a deadly lead poisoning epidemic and called on president Goodluck Jonathan to intervene.
By Christine Hsu | Aug 22, 2012 11:51 AM EDT
The Ebola virus has killed 10 people in the Democratic Republic of Congo, the World Health Organization said on Tuesday.
