Pope Francis has spent a full week in Rome's Gemelli hospital, raising questions about his ability to continue leading the Catholic Church as speculation mounts over a possible resignation.

The 88-year-old pontiff was admitted on February 14, with breathing difficulties, and later diagnosed with double pneumonia.

Though the Vatican has reported slight improvements in his health, the length of his stay has unsettled clergy and followers alike, many recalling past instances of papal resignations under similar circumstances.

On Friday, the Vatican reassured the faithful that Francis had "a good night" and was able to get up, eat breakfast, and continue his work from his hospital room.