Pope Francis, head of the Roman Catholic Church, has held his title for 12 years. What to know about the Jesuit.

Pope Francis is responding well to the treatment for double pneumonia and has shown a "gradual, slight improvement" in recent days, the Vatican said Saturday. But his doctors have decided to keep his prognosis as guarded,

Pope Francis is responding well to treatment for pneumonia after three weeks in hospital, the Vatican said Saturday, adding that the 88-year-old was showing "a gradual, slight improvement".The Argentine pontiff has been in Rome's Gemelli hospital since February 14,

Pope Francis was doing physiotherapy Saturday after passing a quiet night, the Vatican said, as the 88-year-old head of the global Catholic Church battles pneumonia.

Doctors not involved in the pope's care said after three weeks of acute care in the hospital for double pneumonia, they would have hoped to have seen improvement and warned that he was increasingly at risk of secondary infections the longer he remains hospitalized.