The 88-year-old Pope is hospitalized for, among other things, bilateral pneumonia. Blood tests have previously also shown a "early, mild kidney failure" which, according to doctors, is under control.
Late on Monday evening, thousands of people gathered on St. Peter's Square in the Vatican to pray for the Pope's health.
It hurts to see him suffer, says Robert Pietro, who participated in the prayer with a candle in his hand.
But we also pray in gratitude for what he has done for the Church.
The Pope has been cared for at the Gemelli hospital in Rome since February 14. Doctors have stated that the outcome of his health condition is very uncertain due to his age, frailty, and a lung disease he has had previously.