Pope Francis has spent 18 full days at Rome's Gemelli hospital recovering from double pneumonia. It's by far the longest hospitalization of his 12-year papacy, and there is no indication how long it may still last.

Pope Francis has spent 19 full days at Rome's Gemelli hospital, however, it doesn't come close to approaching the record-long stays of St. John Paul II during his quarter-century pontificate.

Pope Francis' condition remains "stable" in hospital with no further bouts of breathlessness, the Vatican said late on Wednesday. He was supplied with oxygen via a tube through his nose during the day,