The 88-year-old pontiff is now able to spend some time during the day off high flows of oxygen and use just ordinary supplemental oxygen delivered by a nasal tube, the Holy See press office said. Doctors are also trying to cut back on the amount of time he uses a noninvasive mechanical ventilation mask at night, to force his lungs to work more.

Pope Francis remained in Rome's Gemelli Hospital Sunday as the Vatican press office released a photo of the pontiff in

The Vatican on Sunday released the first image of Pope Francis since mid-February when he was taken to the hospital where he remains, recovering from a severe respiratory illness.