Nancy Writebol shares her story of surviving Ebola

Nancy Writebol made history as one of the first two people ever treated for Ebola in the U.S. She also beat some staggering odds by recovering from the disease. Now she tells Anderson that she is feeling great and gaining strength everyday.

But it was a long and hard journey from the mission hospital in Liberia where  Writebol and her husband, David, were working. That's where Nancy was infected, and she says she does not know how it happened. The disease forced the Writebols into a terrifying period of isolation and uncertainty. David acknowledges he was even preparing for his wife death.

In her first ever television interview, Nancy Writebol tells Anderson Cooper that she would like to return to Liberia to help Dr. Rick Sacra. He was just infected while working with the same missionary group that she and Dr. Kent Brantly worked for in the country.

Anderson continued his interview with the Writebols. Nancy discussed the toll Ebola took on her body, the experimental serum that helped save her life and much more.