ROME (AP) — Pope Francis’ overall clinical condition is “improving slightly” and his heart is working well as he battles pneumonia, the Vatican said Thursday, as some of his cardinals cheered him on and insisted that the Catholic Church was very much alive and well even in his absence.

In a late update, Vatican spokesman Matteo Bruni said Francis has no fever and that his key heart parameters “continue to be stable.”

The 88-year-old pope was admitted to the hospital on Feb. 14 after a case of bronchitis worsened; doctors later diagnosed the onset of pneumonia in both lungs on top of asthmatic bronchitis and prescribed “absolute rest.”

“If you really want him to rest, you have to hospitalize him,” quipped Cardinal Jean-Marc Aveline, the archbishop of Marseille, France, referring to Francis’ work ethic.