Covid boosters: Who needs them and how do they help?

Key Facts

• While tens of millions of US residents are already eligible for a third jab, Americans across the country remain confused about boosters, who needs them and how they help.
• Company Claim About Booster: Pfizer has been supportive of the need for boosters, with CEO Albert Bourla telling reporters that studies have shown that the vaccine's effectiveness steadily declines to about 84% for vaccinated people four to six months after receiving their second dose.
• Company Claim About Booster: Last month, Moderna said that a half-dose booster jab would boost antibodies to a higher point than the initial two shots and believes a booster will be necessary "prior to the winter season".
• FDA Ruling: On Thursday, a panel of FDA advisers unanimously voted to recommend a single half-dose booster for the elderly, the immunocompromised or those in high-risk jobs or living situations.

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