Pope Francis has shown a "further, slight improvement" in his medical condition, the Vatican said on Wednesday, in a sign of progress as the 88-year-old pontiff battles double pneumonia. The pope is spending his 13th night at Rome's Gemelli hospital,

Pope Francis' condition remains critical but stable and he was able to do some work while still in the hospital with double pneumonia, the Vatican said in a Tuesday evening update.

Pope Francis is spending his 13th day at a Rome hospital receiving treatment for double pneumonia. A Vatican source says the 88-year-old pontiff had another “peaceful night” and was able to eat normally and move about his hospital room.