"She is being treated with anti-coagulants and is at New York-Presbyterian Hospital so that they can monitor the medication over the next 48 hours," he says.
Clinton had been expected to return to work this coming week. CBS News reports:
"Aides and doctors say Clinton contracted a stomach virus in early December and became dehydrated, then fainted, fell and hit her head. She was diagnosed with a concussion on Dec. 13 and hasn't been seen in public since."
Update at 9:20 p.m. ET. Many, Many Miles:
NPR's Michele Kelemen tells our Newscast Desk that Clinton is the most-traveled secretary of state. An interactive on the State Department website shows that Clinton has logged more than 949,000 miles.
Copyright 2012 National Public Radio. To see more, visit http://www.npr.org/.
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