The Vatican carried on with its Holy Year celebrations without the pope Saturday, as Pope Francis battled pneumonia and a complex respiratory infection that doctors say remains touch-and-go and will keep him hospitalized for at least another week.

Pope Francis’ condition poses no immediate threat to his life though he remains at risk after a week in the hospital for treatment of pneumonia, doctors said.

Pope Francis marked the one-week point Friday in his hospital stay, getting up and out of bed to eat breakfast as the 88-year-old pontiff continued fighting pneumonia and a complex respiratory

Doctors say pneumonia in such a fragile, elderly patient makes him particularly prone to complications given the difficulty in being able to effectively expel fluid from his lungs

Doctors say pneumonia in such a fragile, elderly patient makes him particularly prone to complications given the difficulty in being able to effectively expel fluid from his lungs

The Vatican late Thursday reported a “slight improvement” in his overall clinical condition, with his heart working well.

According to the one-line morning bulletin Friday, “The night went well, this morning Pope Francis got up and had breakfast.” Francis was admitted to Rome's Gemelli hospital on Feb. 14 after a case of bronchitis worsened;

Doctors say pneumonia in such a fragile, elderly patient makes him particularly prone to complications given the difficulty in being able to effectively expel fluid from his lungs

Following Pope Francis’ diagnosis of bilateral pneumonia, respiratory doctors are speaking about the condition. The Vatican announced the Catholic leader’s diagnosis this week.

Pope Francis, despite a worrying bilateral pneumonia diagnosis, is breathing on his own and not experiencing heart problems, sources tell CBS News.

The Vatican said Pope Francis has the "onset of bilateral pneumonia," and that tests, a chest X-ray and the pope's clinical condition present a "complex picture."