I missed this when I posted an excerpt from the latest WHO | Ebola virus disease update - West Africa earlier today. The first two paragraphs of the update:
Between 31 July and 1 August 2014, a total of 163 new cases of Ebola virus disease (EVD; laboratory-confirmed, probable, and suspect cases) as well as 61 deaths were reported from Guinea, Liberia, Nigeria, and Sierra Leone. Three of these cases are in Nigeria and include two new probable cases — one is a health-care worker and one is a Nigerian who travelled to Guinea — and a suspected case in a nurse.
National authorities in Ghana, Nigeria, and Togo continue to work closely with WHO and its partners in identification of contacts and contact tracing as well as in preparing response plans as a result of the recent visit by and death of a Liberian national to Nigeria from EVD and the new Nigerian EVD probable case, who travelled to Guinea.