Vatican authorities said Monday that Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment. Here's what to know.

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

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

Pope Francis will be hospitalized at Rome’s Gemelli Polyclinic at the end of Friday’s daily audiences to undergo some necessary diagnostic tests and to continue his ongoing treatment for bronchitis in the hospital,

Pope Francis has been in the hospital since Friday with a respiratory tract infection. Officials with the Vatican said Monday that the 88-year-old’s infection requires further hospitalization and a change in drug therapy. Francis has had several health ailments over the years.

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.

Pope Francis has not been keeping well. Two days after Vatican authorities said he had been diagnosed with a polymicrobial respiratory tract infection, latest reports say he has developed double pneumonia and his condition remains "complex".

Vatican authorities have said that Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment. According to officials, the 88-year-old pope is suffering from a polymicrobial respiratory tract infection,

Vatican authorities said Monday that Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment. Officials said the 88-year-old pope is suffering from a “polymicrobial respiratory tract infection,” but ...

Officials said the 88-year-old pope is suffering from a “polymicrobial respiratory tract infection,” but gave no further details on the severity of his illness or what would change in his ...

ROME (AP) — Pope Francis’ respiratory tract infection is presenting a “complex clinical picture” that will require further hospitalization, the Vatican said Monday, as concerns grew about ...