Doctors on Friday said the 88-year-old Francis is "not out of danger" ​and that the main threat facing him would be the onset of sepsis.

The Vatican carried on with its Holy Year celebrations without the pope Saturday, as Pope Francis battled pneumonia and a complex respiratory infection that doctors say remains touch-and-go and will keep him hospitalized for at least another week.

Pope Francis, who is being treated in hospital for double pneumonia, will not appear in public on Sunday to lead his usual prayer with pilgrims for a second consecutive week, the Vatican said. Francis was admitted to Rome's Gemelli hospital on February 14 after experiencing difficulty in breathing for several days.