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,

The Vatican said preliminary tests showed Pope Francis had a respiratory tract infection, was running a mild fever and was in 'fair' condition and undergoing drug therapy.

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