The Biden administration is expected to announce that booster doses will be needed for most people who received the Covid-19 vaccine.
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Vaccine boosters are not unusual: CNN's medical analyst explains why
With the Biden administration expected to announce that booster doses will be needed for most people who received the Covid-19 vaccine, many people have questions: Are boosters safe? Does the fact that we may need boosters mean that the vaccine isn't working? And who should get them?
