All the differences between COVID-19 vaccines, summarized in a simple table

A physician injects someone with the Moderna COVID-19 vaccine.
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COVID-19 vaccines from Pfizer-BioNTech, Moderna, Johnson & Johnson, and AstraZeneca all have unique features.
They vary in effectiveness, side effects, dosage, and ages approved for the shots.
Here is a table that compares them all. Scroll down to view it.
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