TWiM presents a novel mucosal COVID-19 vaccine based on a bacteriophage capsid, and potentiation of C. difficile infection severity by the gut bacterial community. Become a patron of TWiM. Links for this episode: Bacteriophage based COVID-19 vaccine (mBio) Gut microbiome potentiates C. difficile disease (mBio) Music used on TWiM is composed and performed by Ronald Jenkees and used with permission. Send your microbiology questions and comments to twim@microbe.tv