We thought we knew everything there was to know about measles. But in recent years, new research has revealed that the virus attacks the immune system and creates effects far more dramatic than a rash and fever. For this episode we’re joined by Michael Mina, a former Harvard epidemiologist now at eMed, who helped discover how measles was causing “immune amnesia." Our second guest is Stephen Russell, a former Mayo Clinic researcher who co-founded a company called Vyriad. Russell is trying to use the measles virus to treat cancer.