COVID vaccine boosters: the most important questions

E Callaway - Nature, 2021 - ideas.repec.org
E Callaway
Nature, 2021ideas.repec.org
COVID vaccine boosters: the most important questions IDEAS home Advanced search Economic
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Concerns over waning immunity and SARS-CoV-2 variants have convinced some countries to deploy extra vaccine doses — but it’s not clear to scientists whether most people need them.
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