The Vatican has released the first new picture of Pope Francis since he was taken to hospital more than a month ago. It shows the 88-year-old pontiff celebrating Mass in a chapel on the tenth floor of the Gemelli hospital, where he is still undergoing treatment.

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.