Pope Francis

Pope Francis' condition remains stable, and an X-ray showed there has been a slight improvement regarding his lingering lung infection, the Vatican press office said.

Even on his worst days in Rome's Gemelli hospital, Pope Francis was governing the Catholic Church, although on some days, he did not seem to have the energy to sign his full name, said Cardinal Pietro Parolin.

Home from the hospital after more than five weeks, Pope Francis is showing "slight improvements" in his breathing, ability to speak and mobility, the Vatican press office said.

For Pope Francis' medical team at Rome's Gemelli hospital, Feb. 28 was the worst day.

Immediately before leaving Rome's Gemelli hospital after more than five weeks of treatment for breathing difficulties, double pneumonia and infections, Pope Francis greeted hundreds of people who gathered outside the hospital March 23.

Pope Francis no longer needs the "noninvasive mechanical ventilation" he has used most nights since experiencing a breathing "crisis" Feb. 28, his doctors reported in a bulletin released by the Vatican press office March 19.

Pope Francis spent the night without a breathing mask, the Vatican press office said March 18, indicating that his need for supplemental oxygen continues to diminish.

Pope Francis has been able to spend brief moments of the day without any supplemental oxygen, which is yet another sign of the gradual improvement in his condition, the Vatican press office said.

For the first time since Pope Francis was hospitalized in mid-February, the Vatican press office released a photograph of him March 16; the image shows him concelebrating Mass that morning in the chapel of his suite of rooms at Rome's Gemelli hospital.

After more than a month in the hospital, Pope Francis' condition continues to be stable, the Vatican said March 15, and he gradually is "reducing the need for noninvasive mechanical ventilation at night."