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Ebola: Infected American health worker arrives in U.S. for treatment

Ebola: Infected American health worker arrives in U.S. for treatment (Image 1) (Copyright by WSLS - All rights reserved)

(NBC NEWS) - An American healthcare worker infected with Ebola in Sierra Leone landed in the United States Friday for treatment at a specialist unit in Maryland. 

The unidentified patient is the 11th Ebola case treated in the U.S. since August.The person wasflown back from West Africa in isolation on a chartered flight, the National Institutes of Health (NIH) said in a statement Friday

The NIH admitted the patient to its high-level containment facility in Bethesda, Maryland. The NIH center is the same unit that treated nurse Nina Pham and kept watch overa doctor and a nurse who were eventually found to have escaped infection.

"The unit staff is trained in strict infection control practices optimized to prevent spread of potentially transmissible agents such as Ebola. NIH is taking every precaution to ensure the safety of our patients, NIH staff, and the public," NIH said in a statement.

Ebola has infected more than 24,000 people in West Africa, killing more than 10,000. At least 800 of those infected were health care workers, The World Health Organization said. Of the 10 people treated for Ebola so far in he United States, eight have survived and two have died.