It seems like no one vaccine is ever enough. COVID mutates and the vaccines fall short. A new flu vaccine every year, and each one different from the last. Wouldn't it be nice if we just could get one? One flu shot and call it done? One COVID vaccine and make everything better? Well, scientists are trying their best to develop universal vaccines--one vaccine for the flu, one for COVID, and some for...worms? Yes. Worms. This week, we chat with Kawsar Talaat, an infectious diseases researcher at Johns Hopkins University, and Maria Elena Bottozzi, co-director of the vaccine center at...