Pope Francis’ upcoming commitments appeared increasingly in question Monday as he spent a fourth day in the hospital with a respiratory tract infection that has already sidelined him

The Vatican says Pope Francis slept well during a quiet first night in the hospital after being admitted with a respiratory tract infection. Francis, 88, ate breakfast Saturday morning and

The Vatican says Pope Francis' respiratory tract infection is presenting a "complex clinical picture" that will require further hospitalization.

Pope Francis’ respiratory tract infection is presenting a “complex clinical picture” that will require further hospitalization, the Vatican said Monday as concerns grew about the increasingly frail health of the 88-year-old pontiff.

Pope Francis was hospitalized with a respiratory tract infection and now has pneumonia in both lungs. He has been hospitalized since last week.

Pope Francis' respiratory tract infection has required a modification of his treatment to tackle a "complex clinical situation" and he will remain in hospital as long as is necessary, the Vatican said on Monday.