The press office for the Vatican said Sunday that Pope Francis was able to rest overnight as he slowly recovers from double pneumonia after initially being hospitalized for bronchitis.

What does Pope Francis having "double pneumonia" mean? What should you look for in the elderly? How can you avoid getting pneumonia?

Fox reporter Jeff Paul has more from outside Rome's Gemelli Hospital, where the pontiff is undergoing treatment for double pneumonia. After a worrisome night, Pope Francis is showing his gratitude to well-wishers.