It’s a rainy-night kind of story — one about science, trust, and tiny heroes in your bloodstream. In this episode of Voices of Discovery, Roxie Robinson pours a cup of coffee and unpacks how vaccines really work — from ancient experiments with smallpox scabs to the elegant mRNA blueprints of today.With her trademark humor and calm curiosity, Roxie explains how a simple shot trains your immune system like a seasoned bodyguard — no capes required. Along the way, she reflects on fear, gratitude, and the quiet brilliance of human invention.Warm, witty, and reassuring, this episode reminds us that every vaccine is a love letter from science — and, honestly, it’s cheaper than being sick.

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