
Vatican officials said late Tuesday that Pope Francis had developed pneumonia in both lungs, further complicating the pontiff’s recovery. The 88-year-old pope was hospitalized Friday after a weeklong bout of bronchitis worsened. On Monday, doctors said he had developed a mix of infections in his respiratory tract.
On Wednesday, the Vatican said Pope Francis “had a tranquil night, woke up and had breakfast,” saying he was in good spirits. Here’s a look at what a pneumonia diagnosis can mean and potential treatments doctors might be trying: