Misinformation about COVID-19 vaccines can appear almost anywhere: from an uncle's Facebook post to a well-trusted news commentator. But where does it come from, and why do some myths spread further than others? … Step 1: Start with a kernel of truth … Step 2: Find an influencer to spread doubts and questions … Step 3: Pile on some related myths … Step 4: Make waves in mainstream media … Step 5: Morph to fit the messenger … Step 6: Repeat the cycle with new lies.