COVID VACCINE BOOSTERS: THE MOST IMPORTANT QUESTIONS

[摘要] 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. 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.