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Doctors Without Borders staff wearing protective suits burn waste at the organization's Ebola treatment center in Conakry, Guinea, on Thursday. Waste material is incinerated every night to prevent infection, since no object that cannot be chlorinated is allowed to leave the medical facility's high risk zone.

Conakry, the first major city to be affected by the Ebola outbreak, is currently seeing a massive spike in cases. Doctors Without Borders says it is now caring for more than 120 patients in its two facilities in Guinea.

Interactive look inside an #MSF #Ebola high-risk facility. Such large setups are unprecedented; never needed before. http://t.co/8FEPDlmZXp - Patricia Kahn (@PatriciaKahn) September 15, 2014

- David Arnott