Pope Francis has canceled his trip to Dubai for the U.N. climate conference on doctors’ orders. The announcement marked the second time the pope’s frail health had forced the cancellation of a foreign trip.

The pope, who was slated to speak Saturday at COP28 in Dubai on climate issues, announced Sunday he was fighting a lung inflammation.

The pope was due to visit Dubai for three days. Pope Francis has cancelled his trip to the COP28 climate summit in Dubai due to influenza and lung inflammation, the Vatican said.

The pontiff, who turns 87 next month, has experienced declining health in recent years.

Lung inflammation and breathing difficulties forced Pope Francis to cancel several meetings, the Vatican said Monday.

Pope Francis postponed a series of meetings because of a lung inflammation and breathing difficulties, the Vatican said Monday morning. Matteo Bruni, director of the Vatican press office, said in an emailed statement that a CT scan ruled out pneumonia but added that doctors had inserted a cannula to provide antibiotics.

Pope Francis will not be attending a climate conference in Dubai this week after doctors ordered the aging leader to skip the conference due to health issues, the Holy See press office said Tuesday.