The Vatican press office released a photo of Pope Francis on Sunday in a private chapel of Rome's Gemelli Hospital.

The Vatican released a picture showing the pope seated in a wheelchair in a chapel inside the hospital where he has spent over 30 days.

The Vatican on Sunday released the first picture of Pope Francis in more than a month. It was shared alongside news that the pontiff concelebrated mass at a chapel in the hospital overseeing his care.

Pope Francis is on his 29th straight day in the hospital, a day after he marked the 12th anniversary of when he was elected pope.

The pope rested peacefully overnight as he began his 27th consecutive day in the hospital Wednesday morning, the Vatican said.

The pope rested peacefully overnight after his prognosis was "lifted" on Monday as he begins his 26th straight day in the hospital, the Vatican said. ABC News’ Tom Soufi Burridge reports.

The pope rested peacefully overnight after his prognosis was "lifted" on Monday as he begins his 26th straight day in the hospital, the Vatican said.

Pope Francis' prognosis has been "lifted" on Monday, his 25th consecutive day in the hospital, according to the Vatican.

Pope Francis is participating in the Vatican’s spiritual retreat from a Rome hospital as he continues his recovery from double pneumonia

Pope Francis spent his 24th consecutive day in the hospital receiving therapy and getting an update on world and church affairs, the Vatican's press office said Sunday.

"The night was quiet, the pope was resting," the Holy See, the Vatican's press office, said in a brief statement on Sunday morning.

"The doctors, hoping to record these initial improvements in the coming days, are prudently keeping the prognosis as still guarded," the Vatican said.

Pope Francis "had a tranquil night and woke shortly after 8 a.m.," the Vatican said, coming a day after he made his first public comments since being hospitalized.

The 88-year-old pope thanked the public for their prayers in his first public comments since being hospitalized on Feb. 14.

Pope Francis recorded a 27-second audio message thanking everyone for their prayers for his recovery, in his first public message since he was hospitalized 3 weeks ago.

Pope Francis on Thursday made his first public comments since being hospitalized on Feb. 14, thanking the public for their prayers in a recorded statement made in Spanish.

Pope Francis, 88, "remained stable compared to previous days" and did not have "episodes of respiratory insufficiency" on Thursday, according to the Vatican.

The Vatican said the 88-year-old Pope went through a day without an episode of respiratory failure and remains in stable condition.

The pope "rested well" and woke shortly after 8 a.m. Wednesday morning, his 20th day in the hospital, the Vatican said.

The pontiff had needed medical intervention amid two episodes of "acute respiratory failure" on Monday, Vatican sources said. ABC News' Terry Moran reports.

Pope Francis’ condition appeared to stabilize Tuesday after medical intervention amid two episodes of “acute respiratory failure” on Monday, Vatican sources told ABC News.

The pope, 88, suffered two episodes of "acute respiratory failure" on Monday.

The Vatican said the pope slept through the night after being struck yesterday by two episodes of acute respiratory failure.

The 88-year-old pontiff was not getting enough oxygen during the two emergencies and his prognosis "remains reserved," the Vatican said Monday. Pope Francis remained conscious throughout.

The pope's clinical condition had on Sunday remained "stable," the church said.

The episodes were caused by a "significant accumulation of endobronchial mucus and consequent bronchospasm," the Vatican's press office said in a brief statement.

The pope's clinical condition remains "stable," the Vatican said. ABC News’ Terry Moran reports.

The 88-year-old pontiff continued his hospital stay on Sunday for the 17th consecutive day, church officials said.

Pope Francis' clinical condition remains "stable" on Sunday, the Vatican said.

Pope Francis, 88, remains alert and oriented according to the Vatican, after suffering a respiratory crisis Friday.

Pope Francis is recovering today after suffering a "sudden worsening of his respiratory condition," the Vatican said.

As Pope Francis recovers from pneumonia, he had a setback Friday with a coughing episode.

The pope suffered an "isolated attack of bronchospasm" which caused vomiting with inhalation, the Vatican said on Friday.

The 88-year-old pontiff suffered a "sudden worsening of his respiratory condition," after an "isolated attack of bronchospasm" which caused vomiting with inhalation, the Vatican said on Friday.

The pope suffered an "isolated attack of bronchospasm" which caused vomiting with inhalation, the Vatican said on Friday.

ABC News’ Terry Moran reports on the pope's improving health.

The Vatican said that the pope "slept well during the night and is now resting" peacefully on Thursday morning as the pontiff begins his 14th day in hospital.

The slight renal insufficiency the pope had in recent days subsided and a CAT scan of the chest showed a normal evolution of the pulmonary inflammatory picture.

The 88-year-old pontiff has been meeting with church officials while hospitalized in Rome, according to the Vatican. He underwent a CT scan for his pneumonia.

Pope Francis, 88, has been in Rome's Gemelli Hospital since Feb. 14.

Colleen Dulle, associate editor of "America" magazine and host of “Inside the Vatican,” joined ABC News Live to discuss the latest on the health of Pope Francis.

Massimo Faggioli, professor of theology and religious studies at Villanova University, says the transparency about the pontiff's prolonged hospitalization is "quite unusual."

The Vatican said Pope Francis “rested well all night” after spending his 11th night in the hospital.

The 88-year-old pontiff's doctors are still cautious about the prognosis following his pneumonia diagnosis. He resumed some work activities Monday afternoon, the Vatican press office said.

The Vatican press office said there were "no episodes of asthmatic respiratory crisis" on Monday, and some laboratory tests "have improved."

Colleen Dulle, associate editor of "America" magazine and host of “Inside the Vatican,” discussed Pope Francis' health and whether the pontiff would consider resigning from his post.

Doctors at Gemelli Hospital say the pope is receiving high flow oxygen as a part of his treatment for pneumonia in both of his lungs.

ABC News contributor Father James Martin says the pontiff will “do what’s best for the church.”

Prayers come in from around the world as the 88-year-old pontiff remains in critical condition.

The Vatican said Pope Francis' health remained "critical" on Sunday, but he hasn't experienced any more "respiratory crises" since Saturday evening.