I quickly learned that many patients with advanced COVID-19 disease bore none of the hallmarks of severe respiratory illness until they suddenly collapsed and died. ... [A] study from Wuhan, China, describes pathological lung changes on CT scans of completely asymptomatic patients. Asymptomatic carriage is not uncommon in other virulent infections, such as MRSA and C diff, but what is striking with SARS-CoV-2 (the virus that causes COVID-19) is that it may be accompanied by underlying organ damage. The researchers found lesions consistent with inflammation of the underlying lung tissue (ground-glass opacities and consolidation, to use the medical jargon), which...