Traveller from liberia is first ebola patient diagnosed in us
Ebola screening at SA ports stepped up
Government says extra measures have been put in place to ensure the country remains Ebola free.
The nurse had helped to treat two priests who contracted Ebola in Africa and were repatriated to Spain.
Officials say doses of the experimental medicine ZMapp are 'all gone'.
Up to 100 people had direct or indirect contact with Thomas Eric Duncan, a Liberian citizen.
The diagnosis is a sign that the outbreak ravaging West Africa may spread globally.