Pope Francis’ respiratory 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.

The pope's infection will require further hospitalization, the Vatican said Monday, as concerns grew about the increasingly frail 88-year-old pontiff.

The Vatican says Pope Francis’ respiratory tract infection is presenting a “complex clinical picture” that will require further hospitalization

The Vatican said the results of recent tests indicate the pope is suffering from a polymicrobial respiratory tract infection that has necessitated a further change in his drug therapy.

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

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

The pope's weeklong bout of bronchitis worsened, said the Vatican, which also announced the pope was canceling his participation in Holy Year events through Monday.

Pope Francis was hospitalized Friday after a weeklong bout of bronchitis worsened and was receiving drug therapy for a respiratory tract infection, the Vatican said. It was the latest setback to the 88-year-old's pontiff's health that forced him to cancel his agenda through Monday at least.

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

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

Pope Francis' respiratory 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.