The economic relief measure was intended to give aid to businesses and households affected by the Ebola outbreak.
The measure is set to come into effect on 1 August.
A number of states, including Liberia, Sierra Leone and Guinea, were already granted partial aid.
The other four countries are not.
The US and its allies are pushing for a full humanitarian aid package, but the US Congress has already passed a measure limiting the aid.
“We are on the verge of a humanitarian disaster.
The world is not going to put up with it,” said David Lantos, director of the Ebola Emergency Operations Center at the World Health Organisation (WHO).
“This is not just about a temporary relief measure.”‘
The world is watching’ The UN estimates that 1.3 million people have been infected with the Ebola virus, making it the world’s deadliest outbreak to date.
“The global response is being watched with great interest and anticipation,” UN Secretary-General Antonio Guterres said on Friday.
“This humanitarian response has been the subject of much discussion in the international community.”
The UN Security Council unanimously voted to send more than $1.2 billion in aid to the affected countries.
The vote was in support of a US request for $8.2bn in emergency assistance, which the US has yet to release.
The US will give $1bn in aid, while Germany and the UK have promised $2bn each. “
It is now the task of the world leaders and the international organisations to come together and do the right thing.”
The US will give $1bn in aid, while Germany and the UK have promised $2bn each.
The European Union and Japan have also promised to give $2.2billion.