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An American doctor will be treated for Ebola after being exposed to the virus while volunteering in Sierra Leone. The physician, who has not been named, is expected be admitted for observation and clinical trials at an isolation unit in Bethesda, Maryland, on Sunday, according to the National Institutes of Health. The action is being taken out of 'an abundance of caution', the agency said. Quarantine: An American doctor (not pictured) that was exposed to Ebola while volunteering in Sierra Leone is to be admitted to this isolation unit in Bethesda, Maryland, run by the National Institutes of Health tomorrow

Governments are scrambling to contain the disease outbreak, and the
American has promised to send 3,000 soldiers to the region to help.