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Our COVID-19 vaccines have passed their first tests with flying colors. They work unbelievably well, and they’re helping to slow the spread of disease in countries where they’re widely available. Now, scientists are turning to the next key question: how long will they work that well?
In people who were sick with COVID-19 and then got vaccinated, new research shows that they probably work for years. That group has powerful memory cells in their bone marrow that produce new antibodies when they’re needed. And they work so well that they can even block variants of the virus, studies show. These people may not even need vaccine boosters to stay protected long term.
Protection may be different for people who got vaccinated but never had…