The Federal Government has unveiled its plan to help aid workers in the fight against Ebola – months after the deadly outbreak began - but already, questions are being asked by medical professionals.

On the same day as the announcement, it was revealed that the European Union’s Foreign Affairs Council offered to provide evacuation assistance to Australian health workers over a month ago.

Documents from the EU show that international aid workers, including Australians, have been covered by a special agreement for evacuation and treatment in European hospitals, for several weeks.

It is unclear why the Government did not embrace this option.

Now, health workers want to know exactly how many Australian volunteers can be involved in a British Ebola treatment centre, which Australia has agreed to fund in Sierra Leone.

The Government’s plan consists of giving up to $20 million in funding for local private company Aspen Medical to assist in running the 100-bed Ebola treatment clinic.

The field hospital is being built by the United Kingdom, and will employ about 240 staff.

The Government says most of the staff will be “locally engaged”, and Aspen Medical claims the number of Australian volunteers will be “significant”, but no more clarity has been given.

A large part of the Government's plan is to provide more training for West Africans.

“Not only will we be able to facilitate Australian healthcare workers but also local workforce,” Health Minister Peter Dutton told the ABC.

“I think that's incredibly important, to build capacity on the ground so they can deal with any future health threats after the Ebola crisis has passed.”

Federal secretary of the Nursing and Midwifery Association Lee Thomas told reporters on Wednesday that Australian workers must be able to bring their skills directly to the people.

“Whilst it's important to train local people, the relief effort in West Africa must be supported by Australian and other healthcare workers from around the world, that's the only way they are going to cope,” she said.

Oxfam is pushing for Australia to send a military contingent to West Africa, where almost 4,000 US troops are already on the ground, and the UK is preparing to send close to 1,000.

“We know that we have to contain the impact of the Ebola spread and to do this more treatment centres need to be built,” she said.

“This is why Oxfam continues to ask for consideration that the military has a role to play in being deployed to build those treatment centres.”