Pope Francis was found to have pneumonia in both his lungs Tuesday and his condition remains "complex," the Vatican said in a health update on the 88-year-old pontiff who was hospitalized last week. The big picture: The pope was admitted to Rome's Agostino Gemelli Hospital on Friday with bronchitis symptoms and his treatment was changed after doctors found he had a polymicrobial infection of the respiratory tract.

Vatican officials said that Pope Francis had developed pneumonia in both lungs, further complicating the pontiff’s recovery

Pope Francis remains in critical condition as he battles double pneumonia, requiring high-flow oxygen and blood transfusions. The Vatican confirmed that the 88-year-old pontiff suffered a prolonged respiratory crisis but is alert and stable.