The 88-year-old pontiff is in good spirits and is grateful for the prayers for his recovery, the Vatican said.

Pope Francis has a “polymicrobial infection” of his respiratory tract that will require his hospital treatment to be changed, the Vatican said Monday, with tests indicating a “complex clinical picture” for one of the oldest popes in the church’s history.

Pope Francis has spent a peaceful night at Rome’s Gemelli hospital and continues his recovery today, Vatican spokesman Matteo Bruni tells journalists at the Holy See Press Office.