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A health care worker of the John Fitzgerald Kennedy hospital of Monrovia wearing a protective suit enters the high-risk area of the hospital, the surgical section where Ebola patients are being treated, on September 3, 2014.

(Dominique Faget/AFP/Getty Images)

A health care worker of the John Fitzgerald Kennedy hospital of Monrovia wearing a protective suit enters the high-risk area of the hospital, the surgical section where Ebola patients are being treated, on September 3, 2014. (Dominique Faget/AFP/Getty Images)