How vaccines work: how a shot trains your immune system
mRNA vaccines: how a shot with no virus inside trains your immune system
An mRNA vaccine holds no virus, and not even a piece of one. It holds a short message that your own cells read. What does the message say, and what happens to it afterwards?
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On Rono's shelf, there is another kind of vaccine: an mRNA vaccine against COVID-19. It holds no virus, and not even a piece of one.
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Instead, it holds tiny bubbles of fat. Inside each bubble is a short message for your cells.
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