So far, 2025 has been the winter of respiratory ailments, with influenza, COVID-19, and respiratory syncytial virus (RSV) making up three-fourths of what some are referring to as the "quademic." But one we haven't heard relatively much about is pneumonia.

Pope Francis, 88, was hospitalized last Friday with bronchitis, the Vatican said, and now has a “polymicrobial infection of the respiratory tract.”