But very reliable sources tell me that there are actually only five people currently living at Santa Marta, and all of them are in isolation because they suspect they have contracted the coronavirus. The pope has stopped taking his meals in the common dining room. He spends the majority of his time in his apartment on the top floor. His personal secretary brings him lunch and dinner.

We need to remember that when he was young, Jorge Mario Bergoglio underwent a major surgical operation, in which doctors removed a large part of his lung. This explains the breathing difficulties and shortness of breath that sometimes afflict him. Naturally, a person who has this sort of handicap would have a particular fear of a virus that attacks the lungs like COVID-19.

https://www.churchmilitant.com/news/article/marco-tosatti-the-coronavirus-is-spreading-behind-the-vatican-walls