U.S. President Barack Obama hugs Dallas nurse Nina Pham at the Oval Office in Washington, October 24, 2014. Obama gave a big hug on Friday to Nina Pham, the Dallas nurse who survived a bout with Ebola.
Obama met Pham in the Oval Office shortly after her release from a nearby hospital after recovering from the virus. Pham, who contracted the disease while treating a man who later died of Ebola in a Dallas hospital, had been undergoing treatment at the National Institutes of Health in Bethesda, Maryland, since Oct. 16. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS HEALTH TPX IMAGES OF THE DAY) 

President Barack Obama leans over to hug Dallas nurse Nina Pham while meeting with her in the Oval Office in Washington, October 24, 2014. Pham, who contracted the disease while treating a man who later died of Ebola in a Dallas hospital, was declared virus-free after undergoing treatment at the National Institutes of Health in Bethesda, Maryland, since October 16. REUTERS/Larry Downing 

President Barack Obama hugs Dallas nurse Nina Pham as her mother Diane sits at the Oval Office in Washington, October 24, 2014. REUTERS/Larry Downing 

President Barack Obama talks with Dallas nurse Nina Pham at the Oval Office in Washington, October 24, 2014. REUTERS/Larry Downing 

Security personnel guard a patient's entrance at the National Institutes of Health in Bethesda, Maryland October 16, 2014. REUTERS/Gary Cameron 

The apartment building where Nina Pham resides is seen in Dallas, Texas October 16, 2014. REUTERS/Jaime R. Carrero 

A member of the Protect HazMat team carries protective clothing and supplies near Nina Pham's apartment in Dallas, Texas October 13, 2014. REUTERS/Jaime R. Carrero 

Members of the Protect HazMat team prepare to clear the contents of Nina Pham's apartment in Dallas, Texas October 13, 2014. REUTERS/Jaime R. Carrero