The virus causing an outbreak in Congo suspected of killing more than 200 people is less common than others that cause Ebola disease, which is complicating the response because there are no specific treatments or vaccines.

KAMPALA — In the hills and trading centers of western Uganda, bordering the Democratic Republic of Congo, authorities are racing to limit the spread of Bundibugyo ebolavirus, a…

The virus spreads from direct person-to-person contact. But here's what makes it especially lethal: it persists in corpses, and funeral practices often take place precisely when…