Freetown, March 14 (RHC)-- Sierra Leone has seen an uptick in Ebola cases in certain areas, as the total number of deaths from the outbreak has topped 10,000.

Liberia released its last Ebola patient from treatment last week, but Guinea and Sierra Leone are still struggling to contain the virus. World Health Organization Assistant Director-General Bruce Aylward said waning attention poses a major risk. He said: "We often talk about how steep the drop in cases has been. The only thing that’s dropped more quickly and more steeply has been the new contributions and financing to the program."

Meanwhile, a worker from the U.S. aid group Partners in Health and a British military aid worker have both contracted Ebola in Sierra Leone. The British aid worker has arrived in London for treatment, while the U.S. worker is due to arrive in Bethesda, Maryland.