A marble statue of late Pope John Paul II is backdropped by the Agostino Gemelli Polyclinic in Rome, Saturday, Feb. 15, 2025, where Pope Francis was hospitalized Friday after a weeklong bout of bronchitis worsened and is receiving drug therapy for a respiratory tract infection. Associated Press

ROME — Doctors on Saturday prescribed “absolute rest” for Pope Francis and modified the treatment for his respiratory tract infection, the Vatican said, a day after the 88-year-old pope was admitted to a hospital following a weeklong bout of bronchitis.

On doctors’ orders, Francis won't deliver his traditional Sunday noon blessing, which he could have done from his hospital room if he was well enough.

The Argentine pope, a known workaholic who keeps up a grueling pace despite his many ailments, was admitted to Rome’s Gemelli hospital on Friday after his bronchitis worsened. It was his fourth hospitalization since his 2013 election and raised questions about his increasingly precarious health.

Preliminary tests showed that he had a respiratory tract infection, which was confirmed Saturday. In a late afternoon bulletin, the Vatican said that Francis had no fever on Saturday and that tests showed improvement in some parameters.

Francis slept well during a quiet first night in the hospital, ate breakfast, read the newspapers and received the Eucharist on Saturday, alternating rest with prayer and reading during the afternoon, the Vatican said.

The Vatican canceled his audiences through Monday at least.

Francis, who had part of one lung removed after a lung infection when he was a young man, has kept up a frenetic pace of late. He has packed his days with private audiences while taking on the added obligations of steering the Catholic Church through its Holy Year.

Starting at Christmas, he has had Jubilee events nearly every other weekend, including one honoring the armed forces last weekend in which he presided over a chilly outdoor Mass, despite having already been diagnosed with bronchitis, and advice to stay indoors.

On Monday alone, he met separately with the Vatican ambassador to Croatia, a group of visiting bishops from Madagascar, the European Union’s foreign policy chief, a candidate to be the next UNESCO chief, the rector of the grand mosque of Paris and Nikas Safronov, a Russian painter.

This weekend, he was supposed to have presided over a Jubilee audience for artists, celebrate Mass for them and then on Monday, meet with them at Rome’s famed Cinecitta film studios. Instead, they and thousands of other pilgrims gathered and prayed for the pope in a basilica on Saturday morning.

“Pope Francis is always pushing himself, he always wants to fulfill his commitments at all costs,” said the Rev. Enzo Fortunato, communications director for St. Peter’s Basilica. “And then not to make the situation worse ‘Holy Father that’s enough now.’ And he obeyed, he obeyed.”

Francis, who is prone to respiratory infections in winter, was diagnosed with bronchitis on Feb. 6, but had continued to hold daily audiences in his Vatican hotel suite. But he handed off his speeches for an aide to read aloud, saying he was having trouble breathing.

“To facilitate his recovery, the medical staff prescribed absolute rest,” a Vatican statement said.

Francis has other health problems as well and this marks his fourth time in the papal suite on the 10th floor of Rome’s Gemelli hospital. He uses a wheelchair, walker or cane when moving around his apartment and recently fell twice, hurting his arm and chin.

In 2021, he had 13 inches of his large intestine removed because of a narrowing of the colon. He had further abdominal surgery in 2023 to remove intestinal scar tissue and repair a hernia. During another 2023 hospitalization, he was diagnosed with what he later said was “an acute and strong pneumonia in the lower part of the lungs.”

Sometimes bronchitis can lead to pneumonia, a deeper and far more serious infection of the lungs’ air sacs. Doctors may detect pneumonia by listening for a crackling or whistling sound in the lungs while the patient breathes, but often other tests are needed including a chest X-ray and pulse oximetry that measures how much oxygen is in the blood.

Treatment varies by severity but can include providing oxygen through a nasal tube or mask, intravenous fluids — and treatment of the underlying cause of the infection.

Pope Francis attends an interreligious meeting with young people at the Catholic Junior College in Singapore, Friday, Sept. 13, 2024. Associated Press