Vatican authorities said Monday that Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment.

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

The pope, 88, was diagnosed with a polymicrobial infection after he was hospitalized in Rome on Friday for bronchitis.

Doctors are tweaking their treatment of Pope Francis, the 88-year-old leader of the Catholic Church, as he battles a respiratory tract infection.

Francis was serene after arriving at Rome’s Gemelli hospital after presiding over his morning audiences, Vatican spokesperson Matteo Bruni said.

Pope Francis is being treated for a respiratory tract infection at a Rome hospital after fighting a bout of bronchitis in recent days, the Holy See’s press office said in a statement.The 88-year-old pontiff,

The Argentine pope, a known workaholic who keeps up a grueling pace despite his many ailments, was admitted to Rome’s Gemelli hospital on Friday after a weeklong bout of bronchitis worsened. It was his fourth hospitalization since his 2013 election and raised questions about his increasingly precarious health.

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.

ROME (AP) — The Vatican on Tuesday canceled papal audiences through the weekend and delegated others to cover for Pope Francis as the 88-year-old pope remained hospitalized with a multi-pronged respiratory infection.

Nicole Winfield contributed to this report from Rome. Vatican authorities said ... pope is suffering from a “polymicrobial respiratory tract infection,” but gave no further details on the ...

He was admitted to Rome's Gemelli hospital in a "fair" condition on Friday after a weeklong bout of bronchitis worsened. Doctors confirmed a respiratory tract infection and prescribed "absolute ...