Africa

Ebola scientist Heinz Feldmann tested blood samples at a Liberian treatment center

President Barack Obama and U.S. Senate commit to help West Africa wallop the virus

Scaling up production of Ebola vaccines and treatments will take many months

President Barack Obama expected to announce major new efforts to help West African countries treat and contain the disease

Tiny island nation will send 165 doctors and nurses to Sierra Leone

American clinician says health workers in Monrovia were hoping for more

Numbers are hard to come by, leading to dramatically different estimates

"Conventional Ebola control interventions are not having an adequate impact"

By wiping out native species, an immigrant unleashes a cascade of ecological damage

More than 200 experts recommend fast-tracking biomedical interventions

Infected doctor kept it secret; hundreds under surveillance

WHO and Doctors Without Borders again stress need for scaled-up international action

WHO reports 454 new cases and presents $490 million "road map" to end epidemic in 6 to 9 months

Thirteen fatalities reported among 24 cases in second, apparently unrelated, outbreak

New study provides first estimates for illegal killing across continent

Treatment strategy tried in past for Ebola and other viral diseases, but its effectiveness remains unclear