Pennsylvania Girl Doing Well After 2nd Lung Transplant

FILE - In this May 30, 2013 file photo provided by the Murnaghan family, Sarah Murnaghan, center, celebrates the 100th day of her stay in Children's Hospital of Philadelphia with her father, Fran, left, and mother, Janet. The 10-year-old Pennsylvania girl, who underwent a double-lung transplant amid a national debate over the organ allocation process, has undergone a second transplant after the first failed and is now taking some breaths on her own, her parents said Friday, June 28, 2013. (AP Photo/Murnaghan Family, File)
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PHILADELPHIA The parents of a 10-year-old Pennsylvania girl recovering after a double lung transplant say she is taking some breaths on her own.

Sarah Murnaghan's parents also announced Friday that their daughter had a second lung transplant at Children's Hospital of Philadelphia that had not previously been revealed.

The suburban Philadelphia girl suffers from severe cystic fibrosis. She underwent the operation amid a national debate over the organ allocation process.

Sarah's parents say the first set of lungs failed after the June 12 transplant and Sarah was placed on machines. She received a second set of lungs on June 15.

Her family says that operation was a success and Sarah has taken a few breaths on her own.