Pope Francis remains in critical condition at Gemelli University Hospital in Rome as he continues treatment for bilateral pneumonia. Vatican officials confirmed Sunday that the 88-year-old pope is also experiencing early-stage kidney failure.

According to the Vatican, Pope Francis remains alert and attended Mass on Sunday despite his condition. He has been hospitalized since February 14 due to pneumonia and a complex lung infection.

The Holy See Press Office provided an update on his health, stating that his condition "remains critical, but since [Saturday] evening, he has not experienced any further respiratory crises."

"He received two units of concentrated red blood cells with benefit, and his hemoglobin levels have risen," the statement said. "The thrombocytopenia remains stable; however, some blood tests show early, mild renal insufficiency [kidney failure], which is currently under control."

The Vatican also confirmed that Pope Francis is receiving oxygen treatment and "remains alert and well-oriented." Officials emphasized that the pope’s prognosis remains uncertain. "The complexity of the clinical situation and the necessary time for the pharmacological treatments to show results require that the prognosis remain reserved," the statement said. "This morning, in the apartment on the tenth floor, he participated in the Holy Mass, together with those who have been taking care of him during these days of hospitalization."

Pope Francis addressed the Catholic community through a message on X, thanking people worldwide for their prayers and support. He had experienced a prolonged asthmatic respiratory crisis on Saturday, a condition made more complicated by the fact that he had part of one of his lungs removed earlier in life.

"I have recently received many messages of affection, and I have been particularly struck by the letters and drawings from children," Pope Francis posted on X Sunday. "Thank you for your closeness, and for the consoling prayers I have received from all over the world!"

"I urge you to continue your apostolate with joy and to be a sign of a love that embraces everyone, as the #GospelOfTheDay suggests," he wrote. "May we transform evil into goodness and build a fraternal world. Do not be afraid to take risks for love!"