NPR News: Who might benefit from a 4th shot — and who might not

Who might benefit from a 4th shot — and who might not
Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.

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Science - February 23, 2022 at 05:14AM - Who might benefit from a 4th shot — and who might not