Though the economies of Sierra Leone, Guinea and Liberia were recording strong growth prior to the outbreak, the countries remain some of the world's poorest and incomes have shrunk dramatically since the first Ebola cases were confirmed in Guinea last March.
New cases now appear to be on the wane, but Oxfam said donor countries should commit to a post-Ebola "Marshall Plan" that would address urgent cash shortages and crippling damage to social services like health, education and water and sanitation.
"The world cannot walk away now that, thankfully, cases of this deadly disease are dropping. Failure to help these countries after surviving Ebola will condemn them to a double-disaster," Goldring said.
Oxfam research from three counties in Liberia, the country with the most Ebola deaths, shows that 73 percent of families are facing income declines averaging 39 percent. The lack of money combined with high food prices mean 60 percent of people have not had enough to eat in the last seven days, Oxfam said.
On Sunday, several dozen of WHO's member countries approved a resolution aimed at strengthening the U.N. Health agency's ability to respond to emergencies after a sluggish performance that experts say cost thousands of lives.