Irish music veteran Bob Geldof has publicly urged world leaders to step up their action on Ebola before the outbreak becomes a worldwide crisis.

The Live Aid founder has compared the current troubles to the Aids epidemic and the famine in Africa in the 1980s, insisting politicians need to do more to help the sick and dying in countries such as Sierra Leone, Nigeria and Liberia, where more than 4,000 have lost their lives to the disease.

He tells Sky News, "(I am) slightly dismayed that it's taken so long for the world powers to act... Six months ago they (charity workers at Medecins Sans Frontieres) were begging people to pay attention - as ever too late... I understand the health ministers of Europe are meeting now or shortly, they should have met a month ago... They really do need to get on with it. There is a tipping point beyond which it may not be possible to (contain) this virus..."

Cases of Ebola have been confirmed in the U.S. and Spain since the outbreak began in West Africa, sparking an international clampdown, but Geldof is adamant panic over the spread should not divert attention from the patients who need the most help.

He adds, "In Madrid and in Texas, we believe... we have the ability to contain this. We have the hospitals, the doctors and the nurses... That's not true in West Africa and so they are dying... because... the state does not have money. It has taken a long time for us to realise that what happens there impacts us very quickly... We should be doing whatever is necessary to help. They don't have doctors and nurses... I don't believe there is any need for panic in the U.S. or France or Spain or Britain - we have eminent professions, there's no guarantee, but there's no need to panic. If you are on the streets of Freetown (in Sierra Leone) then you have the right to feel abandoned."