The Vatican said on Tuesday that Pope Francis resumed work while doctors monitored him for bilateral pneumonia.

Pope Francis was in critical condition Saturday after he suffered a long asthmatic respiratory crisis that required high flows of oxygen, the Vatican said.

Pope Francis, 88, is in critical condition due to double pneumonia and a severe lung infection. While receiving high oxygen flows and blood transfusions, doctors fear the onset of sepsis, which could further complicate his condition given his advanced age and respiratory issues.