Plagues have fascinated us since antiquity, but the Antonine Plague stands out because one of the most famous physicians in Western history was present to make detailed observations. In this episode, guest host Liam Conway-Pearson explores what we know -- and what we don't know -- about this plague, which ravaged Rome two millennia ago. Plus a brand new #AdamAnswers about using convalescent plasma to treat the Spanish Flu of 1918!