VATICAN CITY (Reuters) - Pope Francis is slightly indisposed and has canceled an event at a Rome basilica but is carrying out the rest of his schedule in his residence, the Vatican said on Thursday.

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“Because of a slight indisposition, he preferred to stay inside Santa Marta,” the Vatican said, referring to the Vatican guest house where the 83-year-old pontiff lives.

“All other commitments will go ahead regularly,” spokesman Matteo Bruni said.

The Vatican released a picture of the pope and Cardinal Antonio Tagle, a Filipino who has just started in a new post in the Vatican, meeting on Thursday morning with members of the Global Catholic Climate Movement, an international environmental group. The meeting took place in a building steps from the guest house.

The pope appeared to have a cold and spoke with a slightly hoarse voice at his general audience on Wednesday and coughed during an afternoon Ash Wednesday service in a Rome church.

Francis is missing a part of one lung. It was removed when he was in his early 20s in his native Buenos Aires after he suffered from tuberculosis, according to biographer Austen Ivereigh.

He also suffers some leg pain due to sciatica, for which he undergoes regular physical therapy and which explains his occasional difficulty climbing steps.

But he is in generally good health and has been able to endure about four grueling international trips each year since his election in 2013.

The pope had been due to go to the Basilica of St. John’s in Lateran on Thursday morning for a Lenten service with Roman priests.

Some Lent Ash Wednesday services were canceled or limited in areas of northern Italy hit by the spread of coronavirus.

More than 400 people have contracted the disease and 12 have died of it in Italy, in the worst contagion from the coronavirus so far recorded in Europe.

A number of people wore masks in St. Peter’s Square at the Wednesday audience but only one person was seen wearing one at the pope’s Ash Wednesday service.